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ilyak pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
new 385ff65 IGNITE-12111 Cluster ID and tag to identify cluster - Fixes
#7922.
385ff65 is described below
commit 385ff655ece40d0637c016daad28fee8ab0ddee3
Author: Sergey Chugunov <schugu...@gridgain.com>
AuthorDate: Mon Jun 22 19:42:46 2020 +0300
IGNITE-12111 Cluster ID and tag to identify cluster - Fixes #7922.
Signed-off-by: Ilya Kasnacheev <ilya.kasnach...@gmail.com>
---
.../main/java/org/apache/ignite/IgniteCluster.java | 42 +-
.../internal/cluster/IgniteClusterAsyncImpl.java | 15 +
.../ignite/internal/cluster/IgniteClusterImpl.java | 65 ++
.../managers/discovery/GridDiscoveryManager.java | 2 +
.../processors/cluster/ClusterIdAndTag.java | 80 ++
.../processors/cluster/ClusterProcessor.java | 180 ++++-
.../processors/cluster/ClusterTagGenerator.java | 862 +++++++++++++++++++++
.../metastorage/DistributedMetaStorage.java | 5 +
.../FullyConnectedComponentSearcherTest.java | 2 +-
.../internal/cluster/IgniteClusterIdTagTest.java | 288 +++++++
.../junits/multijvm/IgniteClusterProcessProxy.java | 15 +
.../IgniteBasicWithPersistenceTestSuite.java | 5 +-
.../ApiParity/ClusterParityTest.cs | 4 +-
13 files changed, 1559 insertions(+), 6 deletions(-)
diff --git a/modules/core/src/main/java/org/apache/ignite/IgniteCluster.java
b/modules/core/src/main/java/org/apache/ignite/IgniteCluster.java
index 2ba83c6..c80f28c 100644
--- a/modules/core/src/main/java/org/apache/ignite/IgniteCluster.java
+++ b/modules/core/src/main/java/org/apache/ignite/IgniteCluster.java
@@ -41,6 +41,11 @@ import org.jetbrains.annotations.Nullable;
*/
public interface IgniteCluster extends ClusterGroup, IgniteAsyncSupport {
/**
+ * Maximum length of {@link IgniteCluster#tag()} tag.
+ */
+ public static final int MAX_TAG_LENGTH = 280;
+
+ /**
* Gets local grid node.
*
* @return Local grid node.
@@ -559,8 +564,43 @@ public interface IgniteCluster extends ClusterGroup,
IgniteAsyncSupport {
public boolean isWalEnabled(String cacheName);
/**
+ * Cluster ID is a unique identifier automatically generated when cluster
starts up for the very first time.
+ *
+ * It is a cluster-wide property so all nodes of the cluster (including
client nodes) return the same value.
+ *
+ * In in-memory clusters ID is generated again upon each cluster restart.
+ * In clusters running in persistent mode cluster ID is stored to disk and
is used even after full cluster restart.
+ *
+ * @return Unique cluster ID.
+ */
+ public UUID id();
+
+ /**
+ * User-defined tag describing the cluster.
+ *
+ * @return Current tag value same across all nodes of the cluster.
+ */
+ public String tag();
+
+ /**
+ * Enables user to add a specific label to the cluster e.g. to describe
purpose of the cluster
+ * or any its characteristics.
+ * Tag is set cluster-wide,
+ * value set on one node will be distributed across all nodes (including
client nodes) in the cluster.
+ *
+ * Maximum tag length is limited by {@link #MAX_TAG_LENGTH} value.
+ *
+ * @param tag New tag to be set.
+ *
+ * @throws IgniteCheckedException In case tag change is requested on
inactive cluster
+ * or concurrent tag change request was completed before the current one.
+ * Also provided tag is checked for max length.
+ */
+ public void tag(String tag) throws IgniteCheckedException;
+
+ /**
* @return Value of manual baseline control or auto adjusting baseline.
{@code True} If cluster in auto-adjust.
- * {@code False} If cluster in manuale.
+ * {@code False} If cluster in manual.
*/
public boolean isBaselineAutoAdjustEnabled();
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
b/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
index a001b56a..1029afb 100644
---
a/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
+++
b/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterAsyncImpl.java
@@ -364,6 +364,21 @@ public class IgniteClusterAsyncImpl extends
AsyncSupportAdapter<IgniteCluster>
}
/** {@inheritDoc} */
+ @Override public UUID id() {
+ return cluster.id();
+ }
+
+ /** {@inheritDoc} */
+ @Override public String tag() {
+ return cluster.tag();
+ }
+
+ /** {@inheritDoc} */
+ @Override public void tag(String tag) throws IgniteCheckedException {
+ cluster.tag(tag);
+ }
+
+ /** {@inheritDoc} */
@Override public boolean isBaselineAutoAdjustEnabled() {
return cluster.isBaselineAutoAdjustEnabled();
}
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterImpl.java
b/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterImpl.java
index 6443dd3..22449b3 100644
---
a/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterImpl.java
+++
b/modules/core/src/main/java/org/apache/ignite/internal/cluster/IgniteClusterImpl.java
@@ -101,6 +101,12 @@ public class IgniteClusterImpl extends ClusterGroupAdapter
implements IgniteClus
/** Minimal IgniteProductVersion supporting BaselineTopology */
private static final IgniteProductVersion MIN_BLT_SUPPORTING_VER =
IgniteProductVersion.fromString("2.4.0");
+ /** Unique ID of cluster. Generated on start, shared by all nodes. */
+ private volatile UUID id;
+
+ /** User-defined human-readable tag. Generated automatically on start, can
be changed later. */
+ private volatile String tag;
+
/**
* Required by {@link Externalizable}.
*/
@@ -640,6 +646,65 @@ public class IgniteClusterImpl extends ClusterGroupAdapter
implements IgniteClus
}
/** {@inheritDoc} */
+ @Override public UUID id() {
+ return id;
+ }
+
+ /**
+ * Not part of public API.
+ * Enables ClusterProcessor to set ID in the following cases:
+ * <ol>
+ * <li>For the first time on node startup.</li>
+ * <li>Set to null on client disconnect.</li>
+ * <li>Set to some not-null value on client reconnect.</li>
+ * </ol>
+ *
+ * @param id ID to set.
+ */
+ public void setId(UUID id) {
+ this.id = id;
+ }
+
+ /** {@inheritDoc} */
+ @Override public String tag() {
+ return tag;
+ }
+
+ /** {@inheritDoc} */
+ @Override public void tag(String tag) throws IgniteCheckedException {
+ if (tag == null || tag.isEmpty())
+ throw new IgniteCheckedException("Please provide not-null and not
empty string for cluster tag");
+
+ if (tag.length() > MAX_TAG_LENGTH) {
+ throw new IgniteCheckedException("Maximum tag length is exceeded,
max length is " +
+ MAX_TAG_LENGTH +
+ " symbols, provided value has " +
+ tag.length() +
+ " symbols.");
+ }
+
+ if (!ctx.state().publicApiActiveState(true))
+ throw new IgniteCheckedException("Can not change cluster tag on
inactive cluster. To activate the cluster call Ignite.active(true).");
+
+ ctx.cluster().updateTag(tag);
+ }
+
+ /**
+ * Not part of public API.
+ * Enables ClusterProcessor to set tag in the following cases:
+ * <ol>
+ * <li>For the first time on node startup.</li>
+ * <li>Set to null on client disconnect.</li>
+ * <li>Set to some not-null value on client reconnect.</li>
+ * </ol>
+ *
+ * @param tag Tag to set.
+ */
+ public void setTag(@Nullable String tag) {
+ this.tag = tag;
+ }
+
+ /** {@inheritDoc} */
@Override public boolean isBaselineAutoAdjustEnabled() {
return ctx.state().isBaselineAutoAdjustEnabled();
}
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
b/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
index f3107f4..0df84a1 100644
---
a/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
+++
b/modules/core/src/main/java/org/apache/ignite/internal/managers/discovery/GridDiscoveryManager.java
@@ -767,6 +767,8 @@ public class GridDiscoveryManager extends
GridManagerAdapter<DiscoverySpi> {
ctx.authentication().onLocalJoin();
ctx.encryption().onLocalJoin();
+
+ ctx.cluster().onLocalJoin();
}
IgniteInternalFuture<Boolean> transitionWaitFut =
ctx.state().onLocalJoin(discoCache);
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterIdAndTag.java
b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterIdAndTag.java
new file mode 100644
index 0000000..2b03f36
--- /dev/null
+++
b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterIdAndTag.java
@@ -0,0 +1,80 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.processors.cluster;
+
+import java.io.Serializable;
+import java.util.Objects;
+import java.util.UUID;
+import org.apache.ignite.internal.util.typedef.internal.S;
+
+/**
+ * Container class to send cluster ID and tag in disco data and to write them
atomically to metastorage.
+ */
+public class ClusterIdAndTag implements Serializable {
+ /** */
+ private static final long serialVersionUID = 0L;
+
+ /** */
+ private final UUID id;
+
+ /** */
+ private final String tag;
+
+ /**
+ * @param id Cluster ID.
+ * @param tag Cluster tag.
+ */
+ public ClusterIdAndTag(UUID id, String tag) {
+ this.id = id;
+ this.tag = tag;
+ }
+
+ /**
+ * @return Value of cluster id.
+ */
+ public UUID id() {
+ return id;
+ }
+
+ /**
+ * @return Value of cluster tag.
+ */
+ public String tag() {
+ return tag;
+ }
+
+ /** {@inheritDoc} */
+ @Override public int hashCode() {
+ return Objects.hash(id, tag);
+ }
+
+ /** {@inheritDoc} */
+ @Override public boolean equals(Object obj) {
+ if (!(obj instanceof ClusterIdAndTag))
+ return false;
+
+ ClusterIdAndTag idAndTag = (ClusterIdAndTag)obj;
+
+ return id.equals(idAndTag.id) && tag.equals(idAndTag.tag);
+ }
+
+ /** {@inheritDoc} */
+ @Override public String toString() {
+ return S.toString(ClusterIdAndTag.class, this);
+ }
+}
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
index 44a68af..4ae86a8 100644
---
a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
+++
b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterProcessor.java
@@ -33,6 +33,8 @@ import org.apache.ignite.IgniteSystemProperties;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.events.DiscoveryEvent;
import org.apache.ignite.events.Event;
+import org.apache.ignite.failure.FailureContext;
+import org.apache.ignite.failure.FailureType;
import org.apache.ignite.internal.ClusterMetricsSnapshot;
import org.apache.ignite.internal.GridKernalContext;
import org.apache.ignite.internal.IgniteDiagnosticInfo;
@@ -48,6 +50,10 @@ import
org.apache.ignite.internal.managers.discovery.IgniteClusterNode;
import org.apache.ignite.internal.managers.eventstorage.GridLocalEventListener;
import org.apache.ignite.internal.processors.GridProcessorAdapter;
import org.apache.ignite.internal.processors.affinity.AffinityTopologyVersion;
+import
org.apache.ignite.internal.processors.metastorage.DistributedMetaStorage;
+import
org.apache.ignite.internal.processors.metastorage.DistributedMetastorageLifecycleListener;
+import
org.apache.ignite.internal.processors.metastorage.ReadableDistributedMetaStorage;
+import
org.apache.ignite.internal.processors.subscription.GridInternalSubscriptionProcessor;
import org.apache.ignite.internal.processors.timeout.GridTimeoutObject;
import org.apache.ignite.internal.util.GridTimerTask;
import org.apache.ignite.internal.util.future.GridFinishedFuture;
@@ -82,10 +88,14 @@ import static
org.apache.ignite.internal.IgniteVersionUtils.VER_STR;
/**
*
*/
-public class ClusterProcessor extends GridProcessorAdapter {
+public class ClusterProcessor extends GridProcessorAdapter implements
DistributedMetastorageLifecycleListener {
/** */
private static final String ATTR_UPDATE_NOTIFIER_STATUS =
"UPDATE_NOTIFIER_STATUS";
+ /** */
+ private static final String CLUSTER_ID_TAG_KEY =
+ DistributedMetaStorage.IGNITE_INTERNAL_KEY_PREFIX + "cluster.id.tag";
+
/** Periodic version check delay. */
private static final long PERIODIC_VER_CHECK_DELAY = 1000 * 60 * 60; //
Every hour.
@@ -125,6 +135,15 @@ public class ClusterProcessor extends GridProcessorAdapter
{
/** */
private boolean sndMetrics;
+ /** Cluster ID is stored in local variable before activation when it goes
to distributed metastorage. */
+ private volatile UUID localClusterId;
+
+ /** Cluster tag is stored in local variable before activation when it goes
to distributed metastorage. */
+ private volatile String localClusterTag;
+
+ /** */
+ private volatile DistributedMetaStorage metastorage;
+
/**
* @param ctx Kernal context.
*/
@@ -145,6 +164,139 @@ public class ClusterProcessor extends
GridProcessorAdapter {
return getBoolean(IGNITE_DIAGNOSTIC_ENABLED, true);
}
+ /** {@inheritDoc} */
+ @Override public void start() throws IgniteCheckedException {
+ if (ctx.isDaemon())
+ return;
+
+ GridInternalSubscriptionProcessor isp =
ctx.internalSubscriptionProcessor();
+
+ isp.registerDistributedMetastorageListener(this);
+ }
+
+ /** {@inheritDoc} */
+ @Override public void onReadyForRead(ReadableDistributedMetaStorage
metastorage) {
+ ClusterIdAndTag idAndTag = readKey(metastorage, CLUSTER_ID_TAG_KEY,
"Reading cluster ID and tag " +
+ "from metastorage failed, default values will be generated");
+
+ if (log.isInfoEnabled())
+ log.info("Cluster ID and tag has been read from metastorage: " +
idAndTag);
+
+ if (idAndTag != null) {
+ localClusterId = idAndTag.id();
+ localClusterTag = idAndTag.tag();
+ }
+ }
+
+ /**
+ * @param metastorage Metastorage.
+ * @param key Key.
+ * @param errMsg Err message.
+ */
+ private <T extends Serializable> T readKey(ReadableDistributedMetaStorage
metastorage, String key, String errMsg) {
+ try {
+ return metastorage.read(key);
+ }
+ catch (IgniteCheckedException e) {
+ U.warn(log, errMsg, e);
+
+ return null;
+ }
+ }
+
+ /** {@inheritDoc} */
+ @Override public void onReadyForWrite(DistributedMetaStorage metastorage) {
+ this.metastorage = metastorage;
+
+ metastorage.listen(
+ (k) -> k.equals(CLUSTER_ID_TAG_KEY),
+ (String k, ClusterIdAndTag oldVal, ClusterIdAndTag newVal) -> {
+ if (log.isInfoEnabled()) {
+ log.info(
+ "Cluster tag will be set to new value: " +
+ (newVal != null ? newVal.tag() : "null") +
+ ", previous value was: " +
+ (oldVal != null ? oldVal.tag() : "null"));
+ }
+
+ cluster.setTag(newVal != null ? newVal.tag() : null);
+ }
+ );
+
+ ctx.closure().runLocalSafe(
+ () -> {
+ try {
+ ClusterIdAndTag idAndTag = new
ClusterIdAndTag(cluster.id(), cluster.tag());
+
+ if (log.isInfoEnabled())
+ log.info("Writing cluster ID and tag to metastorage on
ready for write " + idAndTag);
+
+ metastorage.writeAsync(CLUSTER_ID_TAG_KEY, idAndTag);
+ }
+ catch (IgniteCheckedException e) {
+ ctx.failure().process(new
FailureContext(FailureType.CRITICAL_ERROR, e));
+ }
+ }
+ );
+ }
+
+ /**
+ * Method is called when user requests updating tag through public API.
+ *
+ * @param newTag New tag.
+ */
+ public void updateTag(String newTag) throws IgniteCheckedException {
+ ClusterIdAndTag oldTag = metastorage.read(CLUSTER_ID_TAG_KEY);
+
+ if (!metastorage.compareAndSet(CLUSTER_ID_TAG_KEY, oldTag, new
ClusterIdAndTag(oldTag.id(), newTag))) {
+ ClusterIdAndTag concurrentValue =
metastorage.read(CLUSTER_ID_TAG_KEY);
+
+ throw new IgniteCheckedException("Cluster tag has been
concurrently updated to different value: " +
+ concurrentValue.tag());
+ }
+ else
+ cluster.setTag(newTag);
+ }
+
+ /**
+ * Node makes ID and tag available through public API on local join event.
+ *
+ * Two cases.
+ * <ul>
+ * <li>In in-memory scenario very first node of the cluster generates
ID and tag,
+ * other nodes receives them on join.</li>
+ * <li>When persistence is enabled each node reads ID and tag from
metastorage
+ * when it becomes ready for read.</li>
+ * </ul>
+ */
+ public void onLocalJoin() {
+ cluster.setId(localClusterId != null ? localClusterId :
UUID.randomUUID());
+
+ cluster.setTag(localClusterTag != null ? localClusterTag :
+ ClusterTagGenerator.generateTag());
+ }
+
+ /** {@inheritDoc} */
+ @Override public void onDisconnected(IgniteFuture<?> reconnectFut) {
+ assert ctx.clientNode();
+
+ localClusterId = null;
+ localClusterTag = null;
+
+ cluster.setId(null);
+ cluster.setTag(null);
+ }
+
+ /** {@inheritDoc} */
+ @Override public IgniteInternalFuture<?> onReconnected(boolean
clusterRestarted) {
+ assert ctx.clientNode();
+
+ cluster.setId(localClusterId);
+ cluster.setTag(localClusterTag);
+
+ return null;
+ }
+
/**
* @throws IgniteCheckedException If failed.
*/
@@ -305,13 +457,15 @@ public class ClusterProcessor extends
GridProcessorAdapter {
/** {@inheritDoc} */
@Override public void collectGridNodeData(DiscoveryDataBag dataBag) {
dataBag.addNodeSpecificData(CLUSTER_PROC.ordinal(),
getDiscoveryData());
+
+ dataBag.addGridCommonData(CLUSTER_PROC.ordinal(), new
ClusterIdAndTag(cluster.id(), cluster.tag()));
}
/**
* @return Discovery data.
*/
private Serializable getDiscoveryData() {
- HashMap<String, Object> map = new HashMap<>();
+ HashMap<String, Object> map = new HashMap<>(2);
map.put(ATTR_UPDATE_NOTIFIER_STATUS, notifyEnabled.get());
@@ -328,6 +482,28 @@ public class ClusterProcessor extends GridProcessorAdapter
{
if (lstFlag != null)
notifyEnabled.set(lstFlag);
}
+
+ ClusterIdAndTag commonData = (ClusterIdAndTag)data.commonData();
+
+ if (commonData != null) {
+ Serializable remoteClusterId = commonData.id();
+
+ if (remoteClusterId != null) {
+ if (localClusterId != null &&
!localClusterId.equals(remoteClusterId)) {
+ log.warning("Received cluster ID differs from locally
stored cluster ID " +
+ "and will be rewritten. " +
+ "Received cluster ID: " + remoteClusterId +
+ ", local cluster ID: " + localClusterId);
+ }
+
+ localClusterId = (UUID)remoteClusterId;
+ }
+
+ String remoteClusterTag = commonData.tag();
+
+ if (remoteClusterTag != null)
+ localClusterTag = remoteClusterTag;
+ }
}
/**
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterTagGenerator.java
b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterTagGenerator.java
new file mode 100644
index 0000000..6552a49
--- /dev/null
+++
b/modules/core/src/main/java/org/apache/ignite/internal/processors/cluster/ClusterTagGenerator.java
@@ -0,0 +1,862 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.processors.cluster;
+
+import java.util.Random;
+import org.apache.ignite.internal.util.typedef.internal.SB;
+
+/**
+ * Generator of default cluster tags.
+ */
+public class ClusterTagGenerator {
+ /** Left part of cluster tag. */
+ public static String[] LEFT_PART = new String[] {
+ "admiring",
+ "adoring",
+ "affectionate",
+ "agitated",
+ "amazing",
+ "angry",
+ "awesome",
+ "beautiful",
+ "blissful",
+ "brave",
+ "busy",
+ "charming",
+ "clever",
+ "cool",
+ "compassionate",
+ "competent",
+ "condescending",
+ "confident",
+ "cranky",
+ "dazzling",
+ "determined",
+ "dreamy",
+ "eager",
+ "ecstatic",
+ "elastic",
+ "elated",
+ "elegant",
+ "eloquent",
+ "epic",
+ "exciting",
+ "fervent",
+ "festive",
+ "flamboyant",
+ "focused",
+ "friendly",
+ "frosty",
+ "funny",
+ "gallant",
+ "gifted",
+ "goofy",
+ "gracious",
+ "great",
+ "happy",
+ "hardcore",
+ "heuristic",
+ "hopeful",
+ "hungry",
+ "infallible",
+ "inspiring",
+ "interesting",
+ "intelligent",
+ "jolly",
+ "jovial",
+ "keen",
+ "kind",
+ "laughing",
+ "loving",
+ "lucid",
+ "magical",
+ "mystifying",
+ "modest",
+ "musing",
+ "naughty",
+ "nervous",
+ "nice",
+ "nifty",
+ "nostalgic",
+ "objective",
+ "optimistic",
+ "peaceful",
+ "pedantic",
+ "pensive",
+ "practical",
+ "priceless",
+ "quirky",
+ "quizzical",
+ "recursing",
+ "relaxed",
+ "reverent",
+ "romantic",
+ "sad",
+ "serene",
+ "sharp",
+ "silly",
+ "sleepy",
+ "stoic",
+ "strange",
+ "stupefied",
+ "suspicious",
+ "sweet",
+ "tender",
+ "thirsty",
+ "trusting",
+ "unruffled",
+ "upbeat",
+ "vibrant",
+ "vigilant",
+ "vigorous",
+ "wizardly",
+ "wonderful",
+ "xenodochial",
+ "youthful",
+ "zealous",
+ "zen"
+ };
+
+ /** Right part of cluster tag. */
+ public static String[] RIGHT_PART = new String[] {
+ // Muhammad ibn Jābir al-Ḥarrānī al-Battānī was a founding father of
astronomy.
https://en.wikipedia.org/wiki/Mu%E1%B8%A5ammad_ibn_J%C4%81bir_al-%E1%B8%A4arr%C4%81n%C4%AB_al-Batt%C4%81n%C4%AB
+ "albattani",
+
+ // Frances E. Allen, became the first female IBM Fellow in 1989. In
2006, she became the first female recipient of the ACM's Turing Award.
https://en.wikipedia.org/wiki/Frances_E._Allen
+ "allen",
+
+ // June Almeida - Scottish virologist who took the first pictures of
the rubella virus - https://en.wikipedia.org/wiki/June_Almeida
+ "almeida",
+
+ // Kathleen Antonelli, American computer programmer and one of the six
original programmers of the ENIAC -
https://en.wikipedia.org/wiki/Kathleen_Antonelli
+ "antonelli",
+
+ // Maria Gaetana Agnesi - Italian mathematician, philosopher,
theologian and humanitarian. She was the first woman to write a mathematics
handbook and the first woman appointed as a Mathematics Professor at a
University. https://en.wikipedia.org/wiki/Maria_Gaetana_Agnesi
+ "agnesi",
+
+ // Archimedes was a physicist, engineer and mathematician who invented
too many things to list them here. https://en.wikipedia.org/wiki/Archimedes
+ "archimedes",
+
+ // Maria Ardinghelli - Italian translator, mathematician and physicist
- https://en.wikipedia.org/wiki/Maria_Ardinghelli
+ "ardinghelli",
+
+ // Aryabhata - Ancient Indian mathematician-astronomer during 476-550
CE https://en.wikipedia.org/wiki/Aryabhata
+ "aryabhata",
+
+ // Wanda Austin - Wanda Austin is the President and CEO of The
Aerospace Corporation, a leading architect for the US security space programs.
https://en.wikipedia.org/wiki/Wanda_Austin
+ "austin",
+
+ // Charles Babbage invented the concept of a programmable computer.
https://en.wikipedia.org/wiki/Charles_Babbage.
+ "babbage",
+
+ // Stefan Banach - Polish mathematician, was one of the founders of
modern functional analysis. https://en.wikipedia.org/wiki/Stefan_Banach
+ "banach",
+
+ // Buckaroo Banzai and his mentor Dr. Hikita perfectd the "oscillation
overthruster", a device that allows one to pass through solid matter. -
https://en.wikipedia.org/wiki/The_Adventures_of_Buckaroo_Banzai_Across_the_8th_Dimension
+ "banzai",
+
+ // John Bardeen co-invented the transistor -
https://en.wikipedia.org/wiki/John_Bardeen
+ "bardeen",
+
+ // Jean Bartik, born Betty Jean Jennings, was one of the original
programmers for the ENIAC computer. https://en.wikipedia.org/wiki/Jean_Bartik
+ "bartik",
+
+ // Laura Bassi, the world's first female professor
https://en.wikipedia.org/wiki/Laura_Bassi
+ "bassi",
+
+ // Hugh Beaver, British engineer, founder of the Guinness Book of
World Records https://en.wikipedia.org/wiki/Hugh_Beaver
+ "beaver",
+
+ // Alexander Graham Bell - an eminent Scottish-born scientist,
inventor, engineer and innovator who is credited with inventing the first
practical telephone - https://en.wikipedia.org/wiki/Alexander_Graham_Bell
+ "bell",
+
+ // Karl Friedrich Benz - a German automobile engineer. Inventor of the
first practical motorcar. https://en.wikipedia.org/wiki/Karl_Benz
+ "benz",
+
+ // Homi J Bhabha - was an Indian nuclear physicist, founding director,
and professor of physics at the Tata Institute of Fundamental Research.
Colloquially known as "father of Indian nuclear programme"-
https://en.wikipedia.org/wiki/Homi_J._Bhabha
+ "bhabha",
+
+ // Bhaskara II - Ancient Indian mathematician-astronomer whose work on
calculus predates Newton and Leibniz by over half a millennium -
https://en.wikipedia.org/wiki/Bh%C4%81skara_II#Calculus
+ "bhaskara",
+
+ // Sue Black - British computer scientist and campaigner. She has been
instrumental in saving Bletchley Park, the site of World War II codebreaking -
https://en.wikipedia.org/wiki/Sue_Black_(computer_scientist)
+ "black",
+
+ // Elizabeth Helen Blackburn - Australian-American Nobel laureate;
best known for co-discovering telomerase.
https://en.wikipedia.org/wiki/Elizabeth_Blackburn
+ "blackburn",
+
+ // Elizabeth Blackwell - American doctor and first American woman to
receive a medical degree - https://en.wikipedia.org/wiki/Elizabeth_Blackwell
+ "blackwell",
+
+ // Niels Bohr is the father of quantum theory.
https://en.wikipedia.org/wiki/Niels_Bohr.
+ "bohr",
+
+ // Kathleen Booth, she's credited with writing the first assembly
language. https://en.wikipedia.org/wiki/Kathleen_Booth
+ "booth",
+
+ // Anita Borg - Anita Borg was the founding director of the Institute
for Women and Technology (IWT). https://en.wikipedia.org/wiki/Anita_Borg
+ "borg",
+
+ // Satyendra Nath Bose - He provided the foundation for Bose–Einstein
statistics and the theory of the Bose–Einstein condensate. -
https://en.wikipedia.org/wiki/Satyendra_Nath_Bose
+ "bose",
+
+ // Katherine Louise Bouman is an imaging scientist and Assistant
Professor of Computer Science at the California Institute of Technology. She
researches computational methods for imaging, and developed an algorithm that
made possible the picture first visualization of a black hole using the Event
Horizon Telescope. - https://en.wikipedia.org/wiki/Katie_Bouman
+ "bouman",
+
+ // Evelyn Boyd Granville - She was one of the first African-American
woman to receive a Ph.D. in mathematics; she earned it in 1949 from Yale
University. https://en.wikipedia.org/wiki/Evelyn_Boyd_Granville
+ "boyd",
+
+ // Brahmagupta - Ancient Indian mathematician during 598-670 CE who
gave rules to compute with zero - https://en.wikipedia.org/wiki/Brahmagupta#Zero
+ "brahmagupta",
+
+ // Walter Houser Brattain co-invented the transistor -
https://en.wikipedia.org/wiki/Walter_Houser_Brattain
+ "brattain",
+
+ // Emmett Brown invented time travel.
https://en.wikipedia.org/wiki/Emmett_Brown (thanks Brian Goff)
+ "brown",
+
+ // Linda Brown Buck - American biologist and Nobel laureate best known
for her genetic and molecular analyses of the mechanisms of smell.
https://en.wikipedia.org/wiki/Linda_B._Buck
+ "buck",
+
+ // Dame Susan Jocelyn Bell Burnell - Northern Irish astrophysicist who
discovered radio pulsars and was the first to analyse them.
https://en.wikipedia.org/wiki/Jocelyn_Bell_Burnell
+ "burnell",
+
+ // Annie Jump Cannon - pioneering female astronomer who classified
hundreds of thousands of stars and created the system we use to understand
stars today. https://en.wikipedia.org/wiki/Annie_Jump_Cannon
+ "cannon",
+
+ // Rachel Carson - American marine biologist and conservationist, her
book Silent Spring and other writings are credited with advancing the global
environmental movement. https://en.wikipedia.org/wiki/Rachel_Carson
+ "carson",
+
+ // Dame Mary Lucy Cartwright - British mathematician who was one of
the first to study what is now known as chaos theory. Also known for
Cartwright's theorem which finds applications in signal processing.
https://en.wikipedia.org/wiki/Mary_Cartwright
+ "cartwright",
+
+ // Vinton Gray Cerf - American Internet pioneer, recognised as one of
"the fathers of the Internet". With Robert Elliot Kahn, he designed TCP and IP,
the primary data communication protocols of the Internet and other computer
networks. https://en.wikipedia.org/wiki/Vint_Cerf
+ "cerf",
+
+ // Subrahmanyan Chandrasekhar - Astrophysicist known for his
mathematical theory on different stages and evolution in structures of the
stars. He has won nobel prize for physics -
https://en.wikipedia.org/wiki/Subrahmanyan_Chandrasekhar
+ "chandrasekhar",
+
+ // Sergey Alexeyevich Chaplygin (Russian: Серге́й Алексе́евич
Чаплы́гин; April 5, 1869 – October 8, 1942) was a Russian and Soviet physicist,
mathematician, and mechanical engineer. He is known for mathematical formulas
such as Chaplygin's equation and for a hypothetical substance in cosmology
called Chaplygin gas, named after him.
https://en.wikipedia.org/wiki/Sergey_Chaplygin
+ "chaplygin",
+
+ // Émilie du Châtelet - French natural philosopher, mathematician,
physicist, and author during the early 1730s, known for her translation of and
commentary on Isaac Newton's book Principia containing basic laws of physics.
https://en.wikipedia.org/wiki/%C3%89milie_du_Ch%C3%A2telet
+ "chatelet",
+
+ // Asima Chatterjee was an Indian organic chemist noted for her
research on vinca alkaloids, development of drugs for treatment of epilepsy and
malaria - https://en.wikipedia.org/wiki/Asima_Chatterjee
+ "chatterjee",
+
+ // Pafnuty Chebyshev - Russian mathematician. He is known fo his works
on probability, statistics, mechanics, analytical geometry and number theory
https://en.wikipedia.org/wiki/Pafnuty_Chebyshev
+ "chebyshev",
+
+ // Bram Cohen - American computer programmer and author of the
BitTorrent peer-to-peer protocol. https://en.wikipedia.org/wiki/Bram_Cohen
+ "cohen",
+
+ // David Lee Chaum - American computer scientist and cryptographer.
Known for his seminal contributions in the field of anonymous communication.
https://en.wikipedia.org/wiki/David_Chaum
+ "chaum",
+
+ // Joan Clarke - Bletchley Park code breaker during the Second World
War who pioneered techniques that remained top secret for decades. Also an
accomplished numismatist https://en.wikipedia.org/wiki/Joan_Clarke
+ "clarke",
+
+ // Jane Colden - American botanist widely considered the first female
American botanist - https://en.wikipedia.org/wiki/Jane_Colden
+ "colden",
+
+ // Gerty Theresa Cori - American biochemist who became the third
woman—and first American woman—to win a Nobel Prize in science, and the first
woman to be awarded the Nobel Prize in Physiology or Medicine. Cori was born in
Prague. https://en.wikipedia.org/wiki/Gerty_Cori
+ "cori",
+
+ // Seymour Roger Cray was an American electrical engineer and
supercomputer architect who designed a series of computers that were the
fastest in the world for decades. https://en.wikipedia.org/wiki/Seymour_Cray
+ "cray",
+
+ // This entry reflects a husband and wife team who worked together:
+ // Joan Curran was a Welsh scientist who developed radar and invented
chaff, a radar countermeasure. https://en.wikipedia.org/wiki/Joan_Curran
+ // Samuel Curran was an Irish physicist who worked alongside his wife
during WWII and invented the proximity fuse.
https://en.wikipedia.org/wiki/Samuel_Curran
+ "curran",
+
+ // Marie Curie discovered radioactivity.
https://en.wikipedia.org/wiki/Marie_Curie.
+ "curie",
+
+ // Charles Darwin established the principles of natural evolution.
https://en.wikipedia.org/wiki/Charles_Darwin.
+ "darwin",
+
+ // Leonardo Da Vinci invented too many things to list here.
https://en.wikipedia.org/wiki/Leonardo_da_Vinci.
+ "davinci",
+
+ // A. K. (Alexander Keewatin) Dewdney, Canadian mathematician,
computer scientist, author and filmmaker. Contributor to Scientific American's
"Computer Recreations" from 1984 to 1991. Author of Core War (program), The
Planiverse, The Armchair Universe, The Magic Machine, The New Turing Omnibus,
and more. https://en.wikipedia.org/wiki/Alexander_Dewdney
+ "dewdney",
+
+ // Satish Dhawan - Indian mathematician and aerospace engineer, known
for leading the successful and indigenous development of the Indian space
programme. https://en.wikipedia.org/wiki/Satish_Dhawan
+ "dhawan",
+
+ // Bailey Whitfield Diffie - American cryptographer and one of the
pioneers of public-key cryptography.
https://en.wikipedia.org/wiki/Whitfield_Diffie
+ "diffie",
+
+ // Edsger Wybe Dijkstra was a Dutch computer scientist and
mathematical scientist. https://en.wikipedia.org/wiki/Edsger_W._Dijkstra.
+ "dijkstra",
+
+ // Paul Adrien Maurice Dirac - English theoretical physicist who made
fundamental contributions to the early development of both quantum mechanics
and quantum electrodynamics. https://en.wikipedia.org/wiki/Paul_Dirac
+ "dirac",
+
+ // Agnes Meyer Driscoll - American cryptanalyst during World Wars I
and II who successfully cryptanalysed a number of Japanese ciphers. She was
also the co-developer of one of the cipher machines of the US Navy, the CM.
https://en.wikipedia.org/wiki/Agnes_Meyer_Driscoll
+ "driscoll",
+
+ // Donna Dubinsky - played an integral role in the development of
personal digital assistants (PDAs) serving as CEO of Palm, Inc. and co-founding
Handspring. https://en.wikipedia.org/wiki/Donna_Dubinsky
+ "dubinsky",
+
+ // Annie Easley - She was a leading member of the team which developed
software for the Centaur rocket stage and one of the first African-Americans in
her field. https://en.wikipedia.org/wiki/Annie_Easley
+ "easley",
+
+ // Thomas Alva Edison, prolific inventor
https://en.wikipedia.org/wiki/Thomas_Edison
+ "edison",
+
+ // Albert Einstein invented the general theory of relativity.
https://en.wikipedia.org/wiki/Albert_Einstein
+ "einstein",
+
+ // Alexandra Asanovna Elbakyan (Russian: Алекса́ндра Аса́новна
Элбакя́н) is a Kazakhstani graduate student, computer programmer, internet
pirate in hiding, and the creator of the site Sci-Hub. Nature has listed her in
2016 in the top ten people that mattered in science, and Ars Technica has
compared her to Aaron Swartz. - https://en.wikipedia.org/wiki/Alexandra_Elbakyan
+ "elbakyan",
+
+ // Taher A. ElGamal - Egyptian cryptographer best known for the
ElGamal discrete log cryptosystem and the ElGamal digital signature scheme.
https://en.wikipedia.org/wiki/Taher_Elgamal
+ "elgamal",
+
+ // Gertrude Elion - American biochemist, pharmacologist and the 1988
recipient of the Nobel Prize in Medicine -
https://en.wikipedia.org/wiki/Gertrude_Elion
+ "elion",
+
+ // James Henry Ellis - British engineer and cryptographer employed by
the GCHQ. Best known for conceiving for the first time, the idea of public-key
cryptography. https://en.wikipedia.org/wiki/James_H._Ellis
+ "ellis",
+
+ // Douglas Engelbart gave the mother of all demos:
https://en.wikipedia.org/wiki/Douglas_Engelbart
+ "engelbart",
+
+ // Euclid invented geometry. https://en.wikipedia.org/wiki/Euclid
+ "euclid",
+
+ // Leonhard Euler invented large parts of modern mathematics.
https://de.wikipedia.org/wiki/Leonhard_Euler
+ "euler",
+
+ // Michael Faraday - British scientist who contributed to the study of
electromagnetism and electrochemistry.
https://en.wikipedia.org/wiki/Michael_Faraday
+ "faraday",
+
+ // Horst Feistel - German-born American cryptographer who was one of
the earliest non-government researchers to study the design and theory of block
ciphers. Co-developer of DES and Lucifer. Feistel networks, a symmetric
structure used in the construction of block ciphers are named after him.
https://en.wikipedia.org/wiki/Horst_Feistel
+ "feistel",
+
+ // Pierre de Fermat pioneered several aspects of modern mathematics.
https://en.wikipedia.org/wiki/Pierre_de_Fermat
+ "fermat",
+
+ // Enrico Fermi invented the first nuclear reactor.
https://en.wikipedia.org/wiki/Enrico_Fermi.
+ "fermi",
+
+ // Richard Feynman was a key contributor to quantum mechanics and
particle physics. https://en.wikipedia.org/wiki/Richard_Feynman
+ "feynman",
+
+ // Benjamin Franklin is famous for his experiments in electricity and
the invention of the lightning rod.
+ "franklin",
+
+ // Yuri Alekseyevich Gagarin - Soviet pilot and cosmonaut, best known
as the first human to journey into outer space.
https://en.wikipedia.org/wiki/Yuri_Gagarin
+ "gagarin",
+
+ // Galileo was a founding father of modern astronomy, and faced
politics and obscurantism to establish scientific truth.
https://en.wikipedia.org/wiki/Galileo_Galilei
+ "galileo",
+
+ // Évariste Galois - French mathematician whose work laid the
foundations of Galois theory and group theory, two major branches of abstract
algebra, and the subfield of Galois connections, all while still in his late
teens. https://en.wikipedia.org/wiki/%C3%89variste_Galois
+ "galois",
+
+ // Kadambini Ganguly - Indian physician, known for being the first
South Asian female physician, trained in western medicine, to graduate in South
Asia. https://en.wikipedia.org/wiki/Kadambini_Ganguly
+ "ganguly",
+
+ // William Henry "Bill" Gates III is an American business magnate,
philanthropist, investor, computer programmer, and inventor.
https://en.wikipedia.org/wiki/Bill_Gates
+ "gates",
+
+ // Johann Carl Friedrich Gauss - German mathematician who made
significant contributions to many fields, including number theory, algebra,
statistics, analysis, differential geometry, geodesy, geophysics, mechanics,
electrostatics, magnetic fields, astronomy, matrix theory, and optics.
https://en.wikipedia.org/wiki/Carl_Friedrich_Gauss
+ "gauss",
+
+ // Marie-Sophie Germain - French mathematician, physicist and
philosopher. Known for her work on elasticity theory, number theory and
philosophy. https://en.wikipedia.org/wiki/Sophie_Germain
+ "germain",
+
+ // Adele Goldberg, was one of the designers and developers of the
Smalltalk language.
https://en.wikipedia.org/wiki/Adele_Goldberg_(computer_scientist)
+ "goldberg",
+
+ // Adele Goldstine, born Adele Katz, wrote the complete technical
description for the first electronic digital computer, ENIAC.
https://en.wikipedia.org/wiki/Adele_Goldstine
+ "goldstine",
+
+ // Shafi Goldwasser is a computer scientist known for creating
theoretical foundations of modern cryptography. Winner of 2012 ACM Turing
Award. https://en.wikipedia.org/wiki/Shafi_Goldwasser
+ "goldwasser",
+
+ // James Golick, all around gangster.
+ "golick",
+
+ // Jane Goodall - British primatologist, ethologist, and
anthropologist who is considered to be the world's foremost expert on
chimpanzees - https://en.wikipedia.org/wiki/Jane_Goodall
+ "goodall",
+
+ // Stephen Jay Gould was was an American paleontologist, evolutionary
biologist, and historian of science. He is most famous for the theory of
punctuated equilibrium - https://en.wikipedia.org/wiki/Stephen_Jay_Gould
+ "gould",
+
+ // Carolyn Widney Greider - American molecular biologist and joint
winner of the 2009 Nobel Prize for Physiology or Medicine for the discovery of
telomerase. https://en.wikipedia.org/wiki/Carol_W._Greider
+ "greider",
+
+ // Alexander Grothendieck - German-born French mathematician who
became a leading figure in the creation of modern algebraic geometry.
https://en.wikipedia.org/wiki/Alexander_Grothendieck
+ "grothendieck",
+
+ // Lois Haibt - American computer scientist, part of the team at IBM
that developed FORTRAN - https://en.wikipedia.org/wiki/Lois_Haibt
+ "haibt",
+
+ // Margaret Hamilton - Director of the Software Engineering Division
of the MIT Instrumentation Laboratory, which developed on-board flight software
for the Apollo space program.
https://en.wikipedia.org/wiki/Margaret_Hamilton_(scientist)
+ "hamilton",
+
+ // Caroline Harriet Haslett - English electrical engineer, electricity
industry administrator and champion of women's rights. Co-author of British
Standard 1363 that specifies AC power plugs and sockets used across the United
Kingdom (which is widely considered as one of the safest designs).
https://en.wikipedia.org/wiki/Caroline_Haslett
+ "haslett",
+
+ // Stephen Hawking pioneered the field of cosmology by combining
general relativity and quantum mechanics.
https://en.wikipedia.org/wiki/Stephen_Hawking
+ "hawking",
+
+ // Martin Edward Hellman - American cryptologist, best known for his
invention of public-key cryptography in co-operation with Whitfield Diffie and
Ralph Merkle. https://en.wikipedia.org/wiki/Martin_Hellman
+ "hellman",
+
+ // Werner Heisenberg was a founding father of quantum mechanics.
https://en.wikipedia.org/wiki/Werner_Heisenberg
+ "heisenberg",
+
+ // Grete Hermann was a German philosopher noted for her philosophical
work on the foundations of quantum mechanics.
https://en.wikipedia.org/wiki/Grete_Hermann
+ "hermann",
+
+ // Caroline Lucretia Herschel - German astronomer and discoverer of
several comets. https://en.wikipedia.org/wiki/Caroline_Herschel
+ "herschel",
+
+ // Heinrich Rudolf Hertz - German physicist who first conclusively
proved the existence of the electromagnetic waves.
https://en.wikipedia.org/wiki/Heinrich_Hertz
+ "hertz",
+
+ // Jaroslav Heyrovský was the inventor of the polarographic method,
father of the electroanalytical method, and recipient of the Nobel Prize in
1959. His main field of work was polarography.
https://en.wikipedia.org/wiki/Jaroslav_Heyrovsk%C3%BD
+ "heyrovsky",
+
+ // Dorothy Hodgkin was a British biochemist, credited with the
development of protein crystallography. She was awarded the Nobel Prize in
Chemistry in 1964. https://en.wikipedia.org/wiki/Dorothy_Hodgkin
+ "hodgkin",
+
+ // Douglas R. Hofstadter is an American professor of cognitive science
and author of the Pulitzer Prize and American Book Award-winning work Goedel,
Escher, Bach: An Eternal Golden Braid in 1979. A mind-bending work which coined
Hofstadter's Law: "It always takes longer than you expect, even when you take
into account Hofstadter's Law." https://en.wikipedia.org/wiki/Douglas_Hofstadter
+ "hofstadter",
+
+ // Erna Schneider Hoover revolutionized modern communication by
inventing a computerized telephone switching method.
https://en.wikipedia.org/wiki/Erna_Schneider_Hoover
+ "hoover",
+
+ // Grace Hopper developed the first compiler for a computer
programming language and is credited with popularizing the term "debugging"
for fixing computer glitches. https://en.wikipedia.org/wiki/Grace_Hopper
+ "hopper",
+
+ // Frances Hugle, she was an American scientist, engineer, and
inventor who contributed to the understanding of semiconductors, integrated
circuitry, and the unique electrical principles of microscopic materials.
https://en.wikipedia.org/wiki/Frances_Hugle
+ "hugle",
+
+ // Hypatia - Greek Alexandrine Neoplatonist philosopher in Egypt who
was one of the earliest mothers of mathematics -
https://en.wikipedia.org/wiki/Hypatia
+ "hypatia",
+
+ // Teruko Ishizaka - Japanese scientist and immunologist who
co-discovered the antibody class Immunoglobulin E.
https://en.wikipedia.org/wiki/Teruko_Ishizaka
+ "ishizaka",
+
+ // Mary Jackson, American mathematician and aerospace engineer who
earned the highest title within NASA's engineering department -
https://en.wikipedia.org/wiki/Mary_Jackson_(engineer)
+ "jackson",
+
+ // Yeong-Sil Jang was a Korean scientist and astronomer during the
Joseon Dynasty; he invented the first metal printing press and water gauge.
https://en.wikipedia.org/wiki/Jang_Yeong-sil
+ "jang",
+
+ // Betty Jennings - one of the original programmers of the ENIAC.
https://en.wikipedia.org/wiki/ENIAC - https://en.wikipedia.org/wiki/Jean_Bartik
+ "jennings",
+
+ // Mary Lou Jepsen, was the founder and chief technology officer of
One Laptop Per Child (OLPC), and the founder of Pixel Qi.
https://en.wikipedia.org/wiki/Mary_Lou_Jepsen
+ "jepsen",
+
+ // Katherine Coleman Goble Johnson - American physicist and
mathematician contributed to the NASA.
https://en.wikipedia.org/wiki/Katherine_Johnson
+ "johnson",
+
+ // Irène Joliot-Curie - French scientist who was awarded the Nobel
Prize for Chemistry in 1935. Daughter of Marie and Pierre Curie.
https://en.wikipedia.org/wiki/Ir%C3%A8ne_Joliot-Curie
+ "joliot",
+
+ // Karen Spärck Jones came up with the concept of inverse document
frequency, which is used in most search engines today.
https://en.wikipedia.org/wiki/Karen_Sp%C3%A4rck_Jones
+ "jones",
+
+ // A. P. J. Abdul Kalam - is an Indian scientist aka Missile Man of
India for his work on the development of ballistic missile and launch vehicle
technology - https://en.wikipedia.org/wiki/A._P._J._Abdul_Kalam
+ "kalam",
+
+ // Sergey Petrovich Kapitsa (Russian: Серге́й Петро́вич Капи́ца; 14
February 1928 – 14 August 2012) was a Russian physicist and demographer. He was
best known as host of the popular and long-running Russian scientific TV show,
Evident, but Incredible. His father was the Nobel laureate Soviet-era physicist
Pyotr Kapitsa, and his brother was the geographer and Antarctic explorer Andrey
Kapitsa. - https://en.wikipedia.org/wiki/Sergey_Kapitsa
+ "kapitsa",
+
+ // Susan Kare, created the icons and many of the interface elements
for the original Apple Macintosh in the 1980s, and was an original employee of
NeXT, working as the Creative Director. https://en.wikipedia.org/wiki/Susan_Kare
+ "kare",
+
+ // Mstislav Keldysh - a Soviet scientist in the field of mathematics
and mechanics, academician of the USSR Academy of Sciences (1946), President of
the USSR Academy of Sciences (1961–1975), three times Hero of Socialist Labor
(1956, 1961, 1971), fellow of the Royal Society of Edinburgh (1968).
https://en.wikipedia.org/wiki/Mstislav_Keldysh
+ "keldysh",
+
+ // Mary Kenneth Keller, Sister Mary Kenneth Keller became the first
American woman to earn a PhD in Computer Science in 1965.
https://en.wikipedia.org/wiki/Mary_Kenneth_Keller
+ "keller",
+
+ // Johannes Kepler, German astronomer known for his three laws of
planetary motion - https://en.wikipedia.org/wiki/Johannes_Kepler
+ "kepler",
+
+ // Omar Khayyam - Persian mathematician, astronomer and poet. Known
for his work on the classification and solution of cubic equations, for his
contribution to the understanding of Euclid's fifth postulate and for computing
the length of a year very accurately. https://en.wikipedia.org/wiki/Omar_Khayyam
+ "khayyam",
+
+ // Har Gobind Khorana - Indian-American biochemist who shared the 1968
Nobel Prize for Physiology - https://en.wikipedia.org/wiki/Har_Gobind_Khorana
+ "khorana",
+
+ // Jack Kilby invented silicone integrated circuits and gave Silicon
Valley its name. - https://en.wikipedia.org/wiki/Jack_Kilby
+ "kilby",
+
+ // Maria Kirch - German astronomer and first woman to discover a comet
- https://en.wikipedia.org/wiki/Maria_Margarethe_Kirch
+ "kirch",
+
+ // Donald Knuth - American computer scientist, author of "The Art of
Computer Programming" and creator of the TeX typesetting system.
https://en.wikipedia.org/wiki/Donald_Knuth
+ "knuth",
+
+ // Sophie Kowalevski - Russian mathematician responsible for important
original contributions to analysis, differential equations and mechanics -
https://en.wikipedia.org/wiki/Sofia_Kovalevskaya
+ "kowalevski",
+
+ // Marie-Jeanne de Lalande - French astronomer, mathematician and
cataloguer of stars - https://en.wikipedia.org/wiki/Marie-Jeanne_de_Lalande
+ "lalande",
+
+ // Hedy Lamarr - Actress and inventor. The principles of her work are
now incorporated into modern Wi-Fi, CDMA and Bluetooth technology.
https://en.wikipedia.org/wiki/Hedy_Lamarr
+ "lamarr",
+
+ // Leslie B. Lamport - American computer scientist. Lamport is best
known for his seminal work in distributed systems and was the winner of the
2013 Turing Award. https://en.wikipedia.org/wiki/Leslie_Lamport
+ "lamport",
+
+ // Mary Leakey - British paleoanthropologist who discovered the first
fossilized Proconsul skull - https://en.wikipedia.org/wiki/Mary_Leakey
+ "leakey",
+
+ // Henrietta Swan Leavitt - she was an American astronomer who
discovered the relation between the luminosity and the period of Cepheid
variable stars. https://en.wikipedia.org/wiki/Henrietta_Swan_Leavitt
+ "leavitt",
+
+ // Esther Miriam Zimmer Lederberg - American microbiologist and a
pioneer of bacterial genetics. https://en.wikipedia.org/wiki/Esther_Lederberg
+ "lederberg",
+
+ // Inge Lehmann - Danish seismologist and geophysicist. Known for
discovering in 1936 that the Earth has a solid inner core inside a molten outer
core. https://en.wikipedia.org/wiki/Inge_Lehmann
+ "lehmann",
+
+ // Daniel Lewin - Mathematician, Akamai co-founder, soldier, 9/11
victim-- Developed optimization techniques for routing traffic on the internet.
Died attempting to stop the 9-11 hijackers.
https://en.wikipedia.org/wiki/Daniel_Lewin
+ "lewin",
+
+ // Ruth Lichterman - one of the original programmers of the ENIAC.
https://en.wikipedia.org/wiki/ENIAC -
https://en.wikipedia.org/wiki/Ruth_Teitelbaum
+ "lichterman",
+
+ // Barbara Liskov - co-developed the Liskov substitution principle.
Liskov was also the winner of the Turing Prize in 2008. -
https://en.wikipedia.org/wiki/Barbara_Liskov
+ "liskov",
+
+ // Ada Lovelace invented the first algorithm.
https://en.wikipedia.org/wiki/Ada_Lovelace (thanks James Turnbull)
+ "lovelace",
+
+ // Auguste and Louis Lumière - the first filmmakers in history -
https://en.wikipedia.org/wiki/Auguste_and_Louis_Lumi%C3%A8re
+ "lumiere",
+
+ // Mahavira - Ancient Indian mathematician during 9th century AD who
discovered basic algebraic identities -
https://en.wikipedia.org/wiki/Mah%C4%81v%C4%ABra_(mathematician)
+ "mahavira",
+
+ // Lynn Margulis (b. Lynn Petra Alexander) - an American evolutionary
theorist and biologist, science author, educator, and popularizer, and was the
primary modern proponent for the significance of symbiosis in evolution. -
https://en.wikipedia.org/wiki/Lynn_Margulis
+ "margulis",
+
+ // Yukihiro Matsumoto - Japanese computer scientist and software
programmer best known as the chief designer of the Ruby programming language.
https://en.wikipedia.org/wiki/Yukihiro_Matsumoto
+ "matsumoto",
+
+ // James Clerk Maxwell - Scottish physicist, best known for his
formulation of electromagnetic theory.
https://en.wikipedia.org/wiki/James_Clerk_Maxwell
+ "maxwell",
+
+ // Maria Mayer - American theoretical physicist and Nobel laureate in
Physics for proposing the nuclear shell model of the atomic nucleus -
https://en.wikipedia.org/wiki/Maria_Mayer
+ "mayer",
+
+ // John McCarthy invented LISP:
https://en.wikipedia.org/wiki/John_McCarthy_(computer_scientist)
+ "mccarthy",
+
+ // Barbara McClintock - a distinguished American cytogeneticist, 1983
Nobel Laureate in Physiology or Medicine for discovering transposons.
https://en.wikipedia.org/wiki/Barbara_McClintock
+ "mcclintock",
+
+ // Anne Laura Dorinthea McLaren - British developmental biologist
whose work helped lead to human in-vitro fertilisation.
https://en.wikipedia.org/wiki/Anne_McLaren
+ "mclaren",
+
+ // Malcolm McLean invented the modern shipping container:
https://en.wikipedia.org/wiki/Malcom_McLean
+ "mclean",
+
+ // Kay McNulty - one of the original programmers of the ENIAC.
https://en.wikipedia.org/wiki/ENIAC -
https://en.wikipedia.org/wiki/Kathleen_Antonelli
+ "mcnulty",
+
+ // Gregor Johann Mendel - Czech scientist and founder of genetics.
https://en.wikipedia.org/wiki/Gregor_Mendel
+ "mendel",
+
+ // Dmitri Mendeleev - a chemist and inventor. He formulated the
Periodic Law, created a farsighted version of the periodic table of elements,
and used it to correct the properties of some already discovered elements and
also to predict the properties of eight elements yet to be discovered.
https://en.wikipedia.org/wiki/Dmitri_Mendeleev
+ "mendeleev",
+
+ // Lise Meitner - Austrian/Swedish physicist who was involved in the
discovery of nuclear fission. The element meitnerium is named after her -
https://en.wikipedia.org/wiki/Lise_Meitner
+ "meitner",
+
+ // Carla Meninsky, was the game designer and programmer for Atari 2600
games Dodge 'Em and Warlords. https://en.wikipedia.org/wiki/Carla_Meninsky
+ "meninsky",
+
+ // Ralph C. Merkle - American computer scientist, known for devising
Merkle's puzzles - one of the very first schemes for public-key cryptography.
Also, inventor of Merkle trees and co-inventor of the Merkle-Damgård
construction for building collision-resistant cryptographic hash functions and
the Merkle-Hellman knapsack cryptosystem.
https://en.wikipedia.org/wiki/Ralph_Merkle
+ "merkle",
+
+ // Johanna Mestorf - German prehistoric archaeologist and first female
museum director in Germany - https://en.wikipedia.org/wiki/Johanna_Mestorf
+ "mestorf",
+
+ // Marvin Minsky - Pioneer in Artificial Intelligence, co-founder of
the MIT's AI Lab, won the Turing Award in 1969.
https://en.wikipedia.org/wiki/Marvin_Minsky
+ "minsky",
+
+ // Maryam Mirzakhani - an Iranian mathematician and the first woman to
win the Fields Medal. https://en.wikipedia.org/wiki/Maryam_Mirzakhani
+ "mirzakhani",
+
+ // Gordon Earle Moore - American engineer, Silicon Valley founding
father, author of Moore's law. https://en.wikipedia.org/wiki/Gordon_Moore
+ "moore",
+
+ // Samuel Morse - contributed to the invention of a single-wire
telegraph system based on European telegraphs and was a co-developer of the
Morse code - https://en.wikipedia.org/wiki/Samuel_Morse
+ "morse",
+
+ // Ian Murdock - founder of the Debian project -
https://en.wikipedia.org/wiki/Ian_Murdock
+ "murdock",
+
+ // May-Britt Moser - Nobel prize winner neuroscientist who contributed
to the discovery of grid cells in the brain.
https://en.wikipedia.org/wiki/May-Britt_Moser
+ "moser",
+
+ // John Napier of Merchiston - Scottish landowner known as an
astronomer, mathematician and physicist. Best known for his discovery of
logarithms. https://en.wikipedia.org/wiki/John_Napier
+ "napier",
+
+ // John Forbes Nash, Jr. - American mathematician who made fundamental
contributions to game theory, differential geometry, and the study of partial
differential equations. https://en.wikipedia.org/wiki/John_Forbes_Nash_Jr.
+ "nash",
+
+ // John von Neumann - todays computer architectures are based on the
von Neumann architecture. https://en.wikipedia.org/wiki/Von_Neumann_architecture
+ "neumann",
+
+ // Isaac Newton invented classic mechanics and modern optics.
https://en.wikipedia.org/wiki/Isaac_Newton
+ "newton",
+
+ // Florence Nightingale, more prominently known as a nurse, was also
the first female member of the Royal Statistical Society and a pioneer in
statistical graphics
https://en.wikipedia.org/wiki/Florence_Nightingale#Statistics_and_sanitary_reform
+ "nightingale",
+
+ // Alfred Nobel - a Swedish chemist, engineer, innovator, and
armaments manufacturer (inventor of dynamite) -
https://en.wikipedia.org/wiki/Alfred_Nobel
+ "nobel",
+
+ // Emmy Noether, German mathematician. Noether's Theorem is named
after her. https://en.wikipedia.org/wiki/Emmy_Noether
+ "noether",
+
+ // Poppy Northcutt. Poppy Northcutt was the first woman to work as
part of NASA’s Mission Control.
http://www.businessinsider.com/poppy-northcutt-helped-apollo-astronauts-2014-12?op=1
+ "northcutt",
+
+ // Robert Noyce invented silicone integrated circuits and gave Silicon
Valley its name. - https://en.wikipedia.org/wiki/Robert_Noyce
+ "noyce",
+
+ // Panini - Ancient Indian linguist and grammarian from 4th century CE
who worked on the world's first formal system -
https://en.wikipedia.org/wiki/P%C4%81%E1%B9%87ini#Comparison_with_modern_formal_systems
+ "panini",
+
+ // Ambroise Pare invented modern surgery.
https://en.wikipedia.org/wiki/Ambroise_Par%C3%A9
+ "pare",
+
+ // Blaise Pascal, French mathematician, physicist, and inventor -
https://en.wikipedia.org/wiki/Blaise_Pascal
+ "pascal",
+
+ // Louis Pasteur discovered vaccination, fermentation and
pasteurization. https://en.wikipedia.org/wiki/Louis_Pasteur.
+ "pasteur",
+
+ // Cecilia Payne-Gaposchkin was an astronomer and astrophysicist who,
in 1925, proposed in her Ph.D. thesis an explanation for the composition of
stars in terms of the relative abundances of hydrogen and helium.
https://en.wikipedia.org/wiki/Cecilia_Payne-Gaposchkin
+ "payne",
+
+ // Radia Perlman is a software designer and network engineer and most
famous for her invention of the spanning-tree protocol (STP).
https://en.wikipedia.org/wiki/Radia_Perlman
+ "perlman",
+
+ // Rob Pike was a key contributor to Unix, Plan 9, the X graphic
system, utf-8, and the Go programming language.
https://en.wikipedia.org/wiki/Rob_Pike
+ "pike",
+
+ // Henri Poincaré made fundamental contributions in several fields of
mathematics. https://en.wikipedia.org/wiki/Henri_Poincar%C3%A9
+ "poincare",
+
+ // Laura Poitras is a director and producer whose work, made possible
by open source crypto tools, advances the causes of truth and freedom of
information by reporting disclosures by whistleblowers such as Edward Snowden.
https://en.wikipedia.org/wiki/Laura_Poitras
+ "poitras",
+
+ // Tat’yana Avenirovna Proskuriakova (Russian: Татья́на Авени́ровна
Проскуряко́ва) (January 23 [O.S. January 10] 1909 – August 30, 1985) was a
Russian-American Mayanist scholar and archaeologist who contributed
significantly to the deciphering of Maya hieroglyphs, the writing system of the
pre-Columbian Maya civilization of Mesoamerica.
https://en.wikipedia.org/wiki/Tatiana_Proskouriakoff
+ "proskuriakova",
+
+ // Claudius Ptolemy - a Greco-Egyptian writer of Alexandria, known as
a mathematician, astronomer, geographer, astrologer, and poet of a single
epigram in the Greek Anthology - https://en.wikipedia.org/wiki/Ptolemy
+ "ptolemy",
+
+ // C. V. Raman - Indian physicist who won the Nobel Prize in 1930 for
proposing the Raman effect. - https://en.wikipedia.org/wiki/C._V._Raman
+ "raman",
+
+ // Srinivasa Ramanujan - Indian mathematician and autodidact who made
extraordinary contributions to mathematical analysis, number theory, infinite
series, and continued fractions. -
https://en.wikipedia.org/wiki/Srinivasa_Ramanujan
+ "ramanujan",
+
+ // Sally Kristen Ride was an American physicist and astronaut. She was
the first American woman in space, and the youngest American astronaut.
https://en.wikipedia.org/wiki/Sally_Ride
+ "ride",
+
+ // Rita Levi-Montalcini - Won Nobel Prize in Physiology or Medicine
jointly with colleague Stanley Cohen for the discovery of nerve growth factor
(https://en.wikipedia.org/wiki/Rita_Levi-Montalcini)
+ "montalcini",
+
+ // Dennis Ritchie - co-creator of UNIX and the C programming language.
- https://en.wikipedia.org/wiki/Dennis_Ritchie
+ "ritchie",
+
+ // Ida Rhodes - American pioneer in computer programming, designed the
first computer used for Social Security.
https://en.wikipedia.org/wiki/Ida_Rhodes
+ "rhodes",
+
+ // Julia Hall Bowman Robinson - American mathematician renowned for
her contributions to the fields of computability theory and computational
complexity theory. https://en.wikipedia.org/wiki/Julia_Robinson
+ "robinson",
+
+ // Wilhelm Conrad Röntgen - German physicist who was awarded the first
Nobel Prize in Physics in 1901 for the discovery of X-rays (Röntgen rays).
https://en.wikipedia.org/wiki/Wilhelm_R%C3%B6ntgen
+ "roentgen",
+
+ // Rosalind Franklin - British biophysicist and X-ray crystallographer
whose research was critical to the understanding of DNA -
https://en.wikipedia.org/wiki/Rosalind_Franklin
+ "rosalind",
+
+ // Vera Rubin - American astronomer who pioneered work on galaxy
rotation rates. https://en.wikipedia.org/wiki/Vera_Rubin
+ "rubin",
+
+ // Meghnad Saha - Indian astrophysicist best known for his development
of the Saha equation, used to describe chemical and physical conditions in
stars - https://en.wikipedia.org/wiki/Meghnad_Saha
+ "saha",
+
+ // Jean E. Sammet developed FORMAC, the first widely used computer
language for symbolic manipulation of mathematical formulas.
https://en.wikipedia.org/wiki/Jean_E._Sammet
+ "sammet",
+
+ // Mildred Sanderson - American mathematician best known for
Sanderson's theorem concerning modular invariants.
https://en.wikipedia.org/wiki/Mildred_Sanderson
+ "sanderson",
+
+ // Satoshi Nakamoto is the name used by the unknown person or group of
people who developed bitcoin, authored the bitcoin white paper, and created and
deployed bitcoin's original reference implementation.
https://en.wikipedia.org/wiki/Satoshi_Nakamoto
+ "satoshi",
+
+ // Adi Shamir - Israeli cryptographer whose numerous inventions and
contributions to cryptography include the Ferge Fiat Shamir identification
scheme, the Rivest Shamir Adleman (RSA) public-key cryptosystem, the Shamir's
secret sharing scheme, the breaking of the Merkle-Hellman cryptosystem, the
TWINKLE and TWIRL factoring devices and the discovery of differential
cryptanalysis (with Eli Biham). https://en.wikipedia.org/wiki/Adi_Shamir
+ "shamir",
+
+ // Claude Shannon - The father of information theory and founder of
digital circuit design theory. (https://en.wikipedia.org/wiki/Claude_Shannon)
+ "shannon",
+
+ // Carol Shaw - Originally an Atari employee, Carol Shaw is said to be
the first female video game designer.
https://en.wikipedia.org/wiki/Carol_Shaw_(video_game_designer)
+ "shaw",
+
+ // Dame Stephanie "Steve" Shirley - Founded a software company in 1962
employing women working from home. https://en.wikipedia.org/wiki/Steve_Shirley
+ "shirley",
+
+ // William Shockley co-invented the transistor -
https://en.wikipedia.org/wiki/William_Shockley
+ "shockley",
+
+ // Lina Solomonovna Stern (or Shtern; Russian: Лина Соломоновна Штерн;
26 August 1878 – 7 March 1968) was a Soviet biochemist, physiologist and
humanist whose medical discoveries saved thousands of lives at the fronts of
World War II. She is best known for her pioneering work on blood–brain barrier,
which she described as hemato-encephalic barrier in 1921.
https://en.wikipedia.org/wiki/Lina_Stern
+ "shtern",
+
+ // Françoise Barré-Sinoussi - French virologist and Nobel Prize
Laureate in Physiology or Medicine; her work was fundamental in identifying HIV
as the cause of AIDS.
https://en.wikipedia.org/wiki/Fran%C3%A7oise_Barr%C3%A9-Sinoussi
+ "sinoussi",
+
+ // Betty Snyder - one of the original programmers of the ENIAC.
https://en.wikipedia.org/wiki/ENIAC -
https://en.wikipedia.org/wiki/Betty_Holberton
+ "snyder",
+
+ // Cynthia Solomon - Pioneer in the fields of artificial intelligence,
computer science and educational computing. Known for creation of Logo, an
educational programming language. https://en.wikipedia.org/wiki/Cynthia_Solomon
+ "solomon",
+
+ // Frances Spence - one of the original programmers of the ENIAC.
https://en.wikipedia.org/wiki/ENIAC -
https://en.wikipedia.org/wiki/Frances_Spence
+ "spence",
+
+ // Richard Matthew Stallman - the founder of the Free Software
movement, the GNU project, the Free Software Foundation, and the League for
Programming Freedom. He also invented the concept of copyleft to protect the
ideals of this movement, and enshrined this concept in the widely-used GPL
(General Public License) for software.
https://en.wikiquote.org/wiki/Richard_Stallman
+ "stallman",
+
+ // Michael Stonebraker is a database research pioneer and architect of
Ingres, Postgres, VoltDB and SciDB. Winner of 2014 ACM Turing Award.
https://en.wikipedia.org/wiki/Michael_Stonebraker
+ "stonebraker",
+
+ // Ivan Edward Sutherland - American computer scientist and Internet
pioneer, widely regarded as the father of computer graphics.
https://en.wikipedia.org/wiki/Ivan_Sutherland
+ "sutherland",
+
+ // Janese Swanson (with others) developed the first of the Carmen
Sandiego games. She went on to found Girl Tech.
https://en.wikipedia.org/wiki/Janese_Swanson
+ "swanson",
+
+ // Aaron Swartz was influential in creating RSS, Markdown, Creative
Commons, Reddit, and much of the internet as we know it today. He was devoted
to freedom of information on the web. https://en.wikiquote.org/wiki/Aaron_Swartz
+ "swartz",
+
+ // Bertha Swirles was a theoretical physicist who made a number of
contributions to early quantum theory.
https://en.wikipedia.org/wiki/Bertha_Swirles
+ "swirles",
+
+ // Helen Brooke Taussig - American cardiologist and founder of the
field of paediatric cardiology. https://en.wikipedia.org/wiki/Helen_B._Taussig
+ "taussig",
+
+ // Valentina Tereshkova is a Russian engineer, cosmonaut and
politician. She was the first woman to fly to space in 1963. In 2013, at the
age of 76, she offered to go on a one-way mission to Mars.
https://en.wikipedia.org/wiki/Valentina_Tereshkova
+ "tereshkova",
+
+ // Nikola Tesla invented the AC electric system and every gadget ever
used by a James Bond villain. https://en.wikipedia.org/wiki/Nikola_Tesla
+ "tesla",
+
+ // Marie Tharp - American geologist and oceanic cartographer who
co-created the first scientific map of the Atlantic Ocean floor. Her work led
to the acceptance of the theories of plate tectonics and continental drift.
https://en.wikipedia.org/wiki/Marie_Tharp
+ "tharp",
+
+ // Ken Thompson - co-creator of UNIX and the C programming language -
https://en.wikipedia.org/wiki/Ken_Thompson
+ "thompson",
+
+ // Linus Torvalds invented Linux and Git.
https://en.wikipedia.org/wiki/Linus_Torvalds
+ "torvalds",
+
+ // Youyou Tu - Chinese pharmaceutical chemist and educator known for
discovering artemisinin and dihydroartemisinin, used to treat malaria, which
has saved millions of lives. Joint winner of the 2015 Nobel Prize in Physiology
or Medicine. https://en.wikipedia.org/wiki/Tu_Youyou
+ "tu",
+
+ // Alan Turing was a founding father of computer science.
https://en.wikipedia.org/wiki/Alan_Turing.
+ "turing",
+
+ // Varahamihira - Ancient Indian mathematician who discovered
trigonometric formulae during 505-587 CE -
https://en.wikipedia.org/wiki/Var%C4%81hamihira#Contributions
+ "varahamihira",
+
+ // Dorothy Vaughan was a NASA mathematician and computer programmer on
the SCOUT launch vehicle program that put America's first satellites into space
- https://en.wikipedia.org/wiki/Dorothy_Vaughan
+ "vaughan",
+
+ // Sir Mokshagundam Visvesvaraya - is a notable Indian engineer. He
is a recipient of the Indian Republic's highest honour, the Bharat Ratna, in
1955. On his birthday, 15 September is celebrated as Engineer's Day in India in
his memory - https://en.wikipedia.org/wiki/Visvesvaraya
+ "visvesvaraya",
+
+ // Christiane Nüsslein-Volhard - German biologist, won Nobel Prize in
Physiology or Medicine in 1995 for research on the genetic control of embryonic
development. https://en.wikipedia.org/wiki/Christiane_N%C3%BCsslein-Volhard
+ "volhard",
+
+ // Cédric Villani - French mathematician, won Fields Medal, Fermat
Prize and Poincaré Price for his work in differential geometry and statistical
mechanics. https://en.wikipedia.org/wiki/C%C3%A9dric_Villani
+ "villani",
+
+ // Marlyn Wescoff - one of the original programmers of the ENIAC.
https://en.wikipedia.org/wiki/ENIAC -
https://en.wikipedia.org/wiki/Marlyn_Meltzer
+ "wescoff",
+
+ // Sylvia B. Wilbur - British computer scientist who helped develop
the ARPANET, was one of the first to exchange email in the UK and a leading
researcher in computer-supported collaborative work.
https://en.wikipedia.org/wiki/Sylvia_Wilbur
+ "wilbur",
+
+ // Andrew Wiles - Notable British mathematician who proved the
enigmatic Fermat's Last Theorem - https://en.wikipedia.org/wiki/Andrew_Wiles
+ "wiles",
+
+ // Roberta Williams, did pioneering work in graphical adventure games
for personal computers, particularly the King's Quest series.
https://en.wikipedia.org/wiki/Roberta_Williams
+ "williams",
+
+ // Malcolm John Williamson - British mathematician and cryptographer
employed by the GCHQ. Developed in 1974 what is now known as Diffie-Hellman key
exchange (Diffie and Hellman first published the scheme in 1976).
https://en.wikipedia.org/wiki/Malcolm_J._Williamson
+ "williamson",
+
+ // Sophie Wilson designed the first Acorn Micro-Computer and the
instruction set for ARM processors. https://en.wikipedia.org/wiki/Sophie_Wilson
+ "wilson",
+
+ // Jeannette Wing - co-developed the Liskov substitution principle. -
https://en.wikipedia.org/wiki/Jeannette_Wing
+ "wing",
+
+ // Steve Wozniak invented the Apple I and Apple II.
https://en.wikipedia.org/wiki/Steve_Wozniak
+ "wozniak",
+
+ // The Wright brothers, Orville and Wilbur - credited with inventing
and building the world's first successful airplane and making the first
controlled, powered and sustained heavier-than-air human flight -
https://en.wikipedia.org/wiki/Wright_brothers
+ "wright",
+
+ // Chien-Shiung Wu - Chinese-American experimental physicist who made
significant contributions to nuclear physics.
https://en.wikipedia.org/wiki/Chien-Shiung_Wu
+ "wu",
+
+ // Rosalyn Sussman Yalow - Rosalyn Sussman Yalow was an American
medical physicist, and a co-winner of the 1977 Nobel Prize in Physiology or
Medicine for development of the radioimmunoassay technique.
https://en.wikipedia.org/wiki/Rosalyn_Sussman_Yalow
+ "yalow",
+
+ // Ada Yonath - an Israeli crystallographer, the first woman from the
Middle East to win a Nobel prize in the sciences.
https://en.wikipedia.org/wiki/Ada_Yonath
+ "yonath",
+
+ // Nikolay Yegorovich Zhukovsky (Russian: Никола́й Его́рович
Жуко́вский, January 17 1847 – March 17, 1921) was a Russian scientist,
mathematician and engineer, and a founding father of modern aero- and
hydrodynamics. Whereas contemporary scientists scoffed at the idea of human
flight, Zhukovsky was the first to undertake the study of airflow. He is often
called the Father of Russian Aviation.
https://en.wikipedia.org/wiki/Nikolay_Yegorovich_Zhukovsky
+ "zhukovsky"
+ };
+
+ /**
+ * Generates cluster tag.
+ *
+ * @return String to use as default cluster tag.
+ */
+ public static String generateTag() {
+ return new SB()
+ .a(LEFT_PART[new Random().nextInt(LEFT_PART.length)])
+ .a('_')
+ .a(RIGHT_PART[new Random().nextInt(RIGHT_PART.length)]).toString();
+ }
+}
diff --git
a/modules/core/src/main/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorage.java
b/modules/core/src/main/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorage.java
index cb70b8c..f7ff5ee 100644
---
a/modules/core/src/main/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorage.java
+++
b/modules/core/src/main/java/org/apache/ignite/internal/processors/metastorage/DistributedMetaStorage.java
@@ -30,6 +30,11 @@ import org.jetbrains.annotations.Nullable;
*/
public interface DistributedMetaStorage extends ReadableDistributedMetaStorage
{
/**
+ * Prefix for keys in metastorage used by Ignite internally. No user keys
should start with this prefix.
+ */
+ public static final String IGNITE_INTERNAL_KEY_PREFIX = "ignite.internal.";
+
+ /**
* Write value into distributed metastorage.
*
* @param key The key.
diff --git
a/modules/core/src/test/java/org/apache/ignite/internal/cluster/FullyConnectedComponentSearcherTest.java
b/modules/core/src/test/java/org/apache/ignite/internal/cluster/FullyConnectedComponentSearcherTest.java
index 7042da0..c9f8095 100644
---
a/modules/core/src/test/java/org/apache/ignite/internal/cluster/FullyConnectedComponentSearcherTest.java
+++
b/modules/core/src/test/java/org/apache/ignite/internal/cluster/FullyConnectedComponentSearcherTest.java
@@ -33,7 +33,7 @@ import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
/**
- * Class to test correctness of fully-connectet component searching algorithm.
+ * Class to test correctness of fully-connected component searching algorithm.
*/
@RunWith(Parameterized.class)
public class FullyConnectedComponentSearcherTest {
diff --git
a/modules/core/src/test/java/org/apache/ignite/internal/cluster/IgniteClusterIdTagTest.java
b/modules/core/src/test/java/org/apache/ignite/internal/cluster/IgniteClusterIdTagTest.java
new file mode 100644
index 0000000..458e89f
--- /dev/null
+++
b/modules/core/src/test/java/org/apache/ignite/internal/cluster/IgniteClusterIdTagTest.java
@@ -0,0 +1,288 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.cluster;
+
+import java.util.UUID;
+import java.util.concurrent.atomic.AtomicBoolean;
+import org.apache.ignite.Ignite;
+import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.configuration.DataRegionConfiguration;
+import org.apache.ignite.configuration.DataStorageConfiguration;
+import org.apache.ignite.configuration.IgniteConfiguration;
+import org.apache.ignite.events.EventType;
+import org.apache.ignite.internal.IgniteEx;
+import org.apache.ignite.testframework.GridTestUtils;
+import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
+import org.junit.Test;
+
+/**
+ * Tests for ID and tag features of IgniteCluster.
+ */
+public class IgniteClusterIdTagTest extends GridCommonAbstractTest {
+ /** */
+ private static final String CUSTOM_TAG_0 = "my_super_cluster";
+
+ /** */
+ private static final String CUSTOM_TAG_1 = "not_so_super_but_OK";
+
+ /** */
+ private static final String CLIENT_CUSTOM_TAG_0 = "client_custom_tag_0";
+
+ /** */
+ private static final String CLIENT_CUSTOM_TAG_1 = "client_custom_tag_1";
+
+ /** */
+ private boolean isPersistenceEnabled;
+
+ /** {@inheritDoc} */
+ @Override protected IgniteConfiguration getConfiguration(String
igniteInstanceName) throws Exception {
+ IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
+
+ if (igniteInstanceName.contains("client"))
+ cfg.setClientMode(true);
+ else {
+ DataStorageConfiguration dsCfg = new DataStorageConfiguration()
+ .setDefaultDataRegionConfiguration(
+ new DataRegionConfiguration()
+ .setInitialSize(128 * 1024 * 1024)
+ .setMaxSize(128 * 1024 * 1024)
+ .setPersistenceEnabled(isPersistenceEnabled)
+ );
+
+ cfg.setDataStorageConfiguration(dsCfg);
+ }
+
+ return cfg;
+ }
+
+ /** {@inheritDoc} */
+ @Override protected void beforeTest() throws Exception {
+ stopAllGrids();
+
+ cleanPersistenceDir();
+ }
+
+ /** {@inheritDoc} */
+ @Override protected void afterTest() throws Exception {
+ stopAllGrids();
+
+ cleanPersistenceDir();
+ }
+
+ /**
+ * Test verifies that cluster ID is generated upon cluster start
+ * and correctly spread across all nodes joining later.
+ *
+ * @throws Exception If failed.
+ */
+ @Test
+ public void testInMemoryClusterId() throws Exception {
+ Ignite ig0 = startGrid(0);
+
+ UUID id0 = ig0.cluster().id();
+
+ assertNotNull(id0);
+
+ Ignite ig1 = startGrid(1);
+
+ UUID id1 = ig1.cluster().id();
+
+ assertEquals(id0, id1);
+
+ stopAllGrids();
+
+ ig0 = startGrid(0);
+
+ assertNotSame(id0, ig0.cluster().id());
+
+ IgniteEx cl0 = startGrid("client0");
+
+ assertEquals(ig0.cluster().id(), cl0.cluster().id());
+ }
+
+ /**
+ * Test verifies that reconnected client applies newly generated ID and tag
+ * and throws away values from old cluster.
+ *
+ * @throws Exception If failed.
+ */
+ @Test
+ public void testInMemoryClusterIdWithClientReconnect() throws Exception {
+ IgniteClusterEx cluster0 = startGrid(0).cluster();
+
+ UUID oldId = cluster0.id();
+ String oldTag = cluster0.tag();
+
+ IgniteEx client0 = startGrid("client0");
+
+ AtomicBoolean reconnectEvent = new AtomicBoolean(false);
+
+ client0.events().localListen((e) -> {
+ reconnectEvent.set(true);
+
+ return true;
+ }, EventType.EVT_CLIENT_NODE_RECONNECTED);
+
+ assertEquals(oldId, client0.cluster().id());
+ assertEquals(oldTag, client0.cluster().tag());
+
+ stopGrid(0);
+
+ cluster0 = startGrid(0).cluster();
+
+ assertNotSame(oldId, cluster0.id());
+ assertNotSame(oldTag, cluster0.tag());
+
+ assertTrue(GridTestUtils.waitForCondition(reconnectEvent::get,
10_000));
+
+ assertEquals("OldID " + oldId, cluster0.id(), client0.cluster().id());
+ assertEquals(cluster0.tag(), client0.cluster().tag());
+ }
+
+ /**
+ * Verifies that in persistent-enabled cluster ID is not lost upon cluster
restart.
+ *
+ * @throws Exception If failed.
+ */
+ @Test
+ public void testPersistentClusterId() throws Exception {
+ isPersistenceEnabled = true;
+
+ IgniteEx ig0 = startGrid(0);
+
+ ig0.cluster().active(true);
+
+ UUID id0 = ig0.cluster().id();
+
+ stopAllGrids();
+
+ ig0 = startGrid(0);
+
+ assertEquals(id0, ig0.cluster().id());
+ }
+
+ /**
+ * Test verifies consistency of tag changes in cluster:
+ * <ul>
+ * <li>Consistency across all server nodes when changed from a
specific server node.</li>
+ * <li>Consistency across joining nodes including clients.</li>
+ * <li>Consistency across clients and servers when changed from
client.</li>
+ * </ul>
+ *
+ * @throws Exception If failed.
+ */
+ @Test
+ public void testInMemoryClusterTag() throws Exception {
+ IgniteEx ig0 = startGrid(0);
+
+ String tag0 = ig0.cluster().tag();
+
+ assertNotNull(tag0);
+
+ ig0.cluster().tag(CUSTOM_TAG_0);
+
+ IgniteEx ig1 = startGrid(1);
+
+ String tag1 = ig1.cluster().tag();
+
+ assertNotNull(tag1);
+
+ assertEquals(CUSTOM_TAG_0, tag1);
+
+ IgniteEx ig2 = startGrid(2);
+
+ assertEquals(CUSTOM_TAG_0, ig2.cluster().tag());
+
+ ig2.cluster().tag(CUSTOM_TAG_1);
+
+ //tag set from one server node is applied on all other nodes
+ assertEquals(CUSTOM_TAG_1, ig0.cluster().tag());
+
+ assertEquals(CUSTOM_TAG_1, ig1.cluster().tag());
+
+ IgniteEx cl0 = startGrid("client0");
+
+ assertEquals(CUSTOM_TAG_1, cl0.cluster().tag());
+
+ cl0.cluster().tag(CLIENT_CUSTOM_TAG_0);
+
+ //tag set from client is applied on server nodes
+ assertEquals(CLIENT_CUSTOM_TAG_0, ig0.cluster().tag());
+
+ IgniteEx cl1 = startGrid("client1");
+
+ cl1.cluster().tag(CLIENT_CUSTOM_TAG_1);
+
+ //tag set from client is applied on other client nodes
+ assertEquals(CLIENT_CUSTOM_TAG_1, cl0.cluster().tag());
+ }
+
+ /**
+ * Verifies consistency of tag when set up in inactive and active
clusters and on client nodes.
+ *
+ * @throws Exception If failed.
+ */
+ @Test
+ public void testPersistentClusterTag() throws Exception {
+ isPersistenceEnabled = true;
+
+ IgniteEx ig0 = startGrid(0);
+
+ boolean expectedExceptionThrown = false;
+
+ try {
+ ig0.cluster().tag(CUSTOM_TAG_0);
+ }
+ catch (IgniteCheckedException e) {
+ if (e.getMessage().contains("Can not change cluster tag on
inactive cluster."))
+ expectedExceptionThrown = true;
+ }
+
+ assertTrue(expectedExceptionThrown);
+
+ IgniteEx ig1 = startGrid(1);
+
+ assertEquals(ig0.cluster().tag(), ig1.cluster().tag());
+
+ String tag1 = ig1.cluster().tag();
+
+ ig0.cluster().active(true);
+
+ stopAllGrids();
+
+ ig0 = startGrid(0);
+
+ ig1 = startGrid(1);
+
+ assertEquals(tag1, ig0.cluster().tag());
+
+ ig1.cluster().active(true);
+
+ IgniteEx cl0 = startGrid("client0");
+
+ cl0.cluster().tag(CUSTOM_TAG_0);
+
+ stopAllGrids();
+
+ ig0 = startGrid(0);
+
+ ig1 = startGrid(1);
+
+ assertEquals(CUSTOM_TAG_0, ig1.cluster().tag());
+ }
+}
diff --git
a/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteClusterProcessProxy.java
b/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteClusterProcessProxy.java
index c8e6fb3..9490590 100644
---
a/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteClusterProcessProxy.java
+++
b/modules/core/src/test/java/org/apache/ignite/testframework/junits/multijvm/IgniteClusterProcessProxy.java
@@ -193,6 +193,21 @@ public class IgniteClusterProcessProxy implements
IgniteClusterEx {
}
/** {@inheritDoc} */
+ @Override public UUID id() {
+ throw new UnsupportedOperationException("Operation is not supported
yet.");
+ }
+
+ /** {@inheritDoc} */
+ @Override public String tag() {
+ throw new UnsupportedOperationException("Operation is not supported
yet.");
+ }
+
+ /** {@inheritDoc} */
+ @Override public void tag(String tag) {
+ throw new UnsupportedOperationException("Operation is not supported
yet.");
+ }
+
+ /** {@inheritDoc} */
@Override public boolean isAsync() {
throw new UnsupportedOperationException("Operation is not supported
yet.");
}
diff --git
a/modules/core/src/test/java/org/apache/ignite/testsuites/IgniteBasicWithPersistenceTestSuite.java
b/modules/core/src/test/java/org/apache/ignite/testsuites/IgniteBasicWithPersistenceTestSuite.java
index cf1c881..3dee2a0 100644
---
a/modules/core/src/test/java/org/apache/ignite/testsuites/IgniteBasicWithPersistenceTestSuite.java
+++
b/modules/core/src/test/java/org/apache/ignite/testsuites/IgniteBasicWithPersistenceTestSuite.java
@@ -23,6 +23,7 @@ import org.apache.ignite.failure.SystemWorkersBlockingTest;
import org.apache.ignite.failure.SystemWorkersTerminationTest;
import org.apache.ignite.internal.ClusterBaselineNodesMetricsSelfTest;
import org.apache.ignite.internal.GridNodeMetricsLogPdsSelfTest;
+import org.apache.ignite.internal.cluster.IgniteClusterIdTagTest;
import org.apache.ignite.internal.encryption.EncryptedCacheBigEntryTest;
import org.apache.ignite.internal.encryption.EncryptedCacheCreateTest;
import org.apache.ignite.internal.encryption.EncryptedCacheDestroyTest;
@@ -87,7 +88,9 @@ import org.junit.runners.Suite;
IgniteSnapshotManagerSelfTest.class,
IgniteClusterSnapshotSelfTest.class,
- IgniteSnapshotMXBeanTest.class
+ IgniteSnapshotMXBeanTest.class,
+
+ IgniteClusterIdTagTest.class
})
public class IgniteBasicWithPersistenceTestSuite {
}
diff --git
a/modules/platforms/dotnet/Apache.Ignite.Core.Tests/ApiParity/ClusterParityTest.cs
b/modules/platforms/dotnet/Apache.Ignite.Core.Tests/ApiParity/ClusterParityTest.cs
index 091a183..b1f52c8 100644
---
a/modules/platforms/dotnet/Apache.Ignite.Core.Tests/ApiParity/ClusterParityTest.cs
+++
b/modules/platforms/dotnet/Apache.Ignite.Core.Tests/ApiParity/ClusterParityTest.cs
@@ -45,7 +45,9 @@
{
"enableStatistics", // IGNITE-7276
"clearStatistics", // IGNITE-9017
- "state" // IGNITE-11863
+ "state", // IGNITE-11863
+ "id", // IGNITE-13141
+ "tag" // IGNITE-13141
};
/// <summary>
