Apache9 commented on a change in pull request #3700:
URL: https://github.com/apache/hbase/pull/3700#discussion_r734548854



##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/migrate/RollingUpgradeChore.java
##########
@@ -0,0 +1,131 @@
+/*
+ * 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.hadoop.hbase.master.migrate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.ScheduledChore;
+import org.apache.hadoop.hbase.Stoppable;
+import org.apache.hadoop.hbase.TableDescriptors;
+import org.apache.hadoop.hbase.client.TableDescriptor;
+import org.apache.hadoop.hbase.master.MasterServices;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.MigrateStoreFileTrackerProcedure;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * To avoid too many migrating/upgrade threads to be submitted at the time 
during master
+ * initialization, RollingUpgradeChore handles all rolling-upgrade tasks.
+ * */
+@InterfaceAudience.Private
+public class RollingUpgradeChore extends ScheduledChore {
+
+  public static final String ROLLING_UPGRADE_CHORE_ENABLED_KEY =
+    "hbase.master.rolling.upgrade.chore.enabled";
+  public static final boolean DEFAULT_ROLLING_UPGRADE_CHORE_ENABLED = true;
+
+  static final String ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY =
+    "hbase.master.rolling.upgrade.chore.timeunit";
+  static final String DEFAULT_ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY = 
TimeUnit.MILLISECONDS.name();
+
+  static final String ROLLING_UPGRADE_CHORE_PERIOD_KEY = 
"hbase.master.rolling.upgrade.chore.period";
+  static final int DFAULT_ROLLING_UPGRADE_CHORE_PERIOD = 1000 * 60 * 5; // 5 
minutes in millis
+
+  static final String ROLLING_UPGRADE_CHORE_DELAY_KEY = 
"hbase.master.rolling.upgrade.chore.delay";
+  static final long DEFAULT_ROLLING_UPGRADE_CHORE_DELAY = 1000L * 60 * 10; // 
10 minutes in millis
+
+  private final static Logger LOG = 
LoggerFactory.getLogger(RollingUpgradeChore.class);
+  ProcedureExecutor<MasterProcedureEnv> procedureExecutor;
+  private TableDescriptors tableDescriptors;
+  private List<MigrateStoreFileTrackerProcedure> processingProcs = new 
ArrayList<>();
+  private boolean isMigratingDone;
+
+  public RollingUpgradeChore(MasterServices masterServices) {
+    this(masterServices.getConfiguration(), 
masterServices.getMasterProcedureExecutor(), 
masterServices.getTableDescriptors(), masterServices);
+  }
+
+  private RollingUpgradeChore(Configuration conf, 
ProcedureExecutor<MasterProcedureEnv> procedureExecutor, TableDescriptors 
tableDescriptors, Stoppable stopper){
+    super(RollingUpgradeChore.class.getSimpleName(), stopper,
+      conf.getInt(ROLLING_UPGRADE_CHORE_PERIOD_KEY, 
DFAULT_ROLLING_UPGRADE_CHORE_PERIOD),
+      conf.getLong(ROLLING_UPGRADE_CHORE_DELAY_KEY, 
DEFAULT_ROLLING_UPGRADE_CHORE_DELAY),
+      TimeUnit.valueOf(conf.get(ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY, 
DEFAULT_ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY)));
+    this.procedureExecutor = procedureExecutor;
+    this.tableDescriptors = tableDescriptors;
+  }
+
+  @Override
+  protected void chore() {
+    migrateStoreFileTracker(5);

Review comment:
       At least let's introduce a static final int constant here...

##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
##########
@@ -1222,6 +1224,14 @@ private void 
finishActiveMasterInitialization(MonitoredTask status) throws IOExc
       LOG.debug("Balancer post startup initialization complete, took " + (
           (EnvironmentEdgeManager.currentTime() - start) / 1000) + " seconds");
     }
+
+    boolean isRollingUpgradeChoreEnabled = conf

Review comment:
       I do not think we should allow users to disable this chore? We must do 
the upgrading...

##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/migrate/RollingUpgradeChore.java
##########
@@ -0,0 +1,131 @@
+/*
+ * 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.hadoop.hbase.master.migrate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.ScheduledChore;
+import org.apache.hadoop.hbase.Stoppable;
+import org.apache.hadoop.hbase.TableDescriptors;
+import org.apache.hadoop.hbase.client.TableDescriptor;
+import org.apache.hadoop.hbase.master.MasterServices;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.MigrateStoreFileTrackerProcedure;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * To avoid too many migrating/upgrade threads to be submitted at the time 
during master
+ * initialization, RollingUpgradeChore handles all rolling-upgrade tasks.
+ * */
+@InterfaceAudience.Private
+public class RollingUpgradeChore extends ScheduledChore {
+
+  public static final String ROLLING_UPGRADE_CHORE_ENABLED_KEY =
+    "hbase.master.rolling.upgrade.chore.enabled";
+  public static final boolean DEFAULT_ROLLING_UPGRADE_CHORE_ENABLED = true;
+
+  static final String ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY =
+    "hbase.master.rolling.upgrade.chore.timeunit";
+  static final String DEFAULT_ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY = 
TimeUnit.MILLISECONDS.name();
+
+  static final String ROLLING_UPGRADE_CHORE_PERIOD_KEY = 
"hbase.master.rolling.upgrade.chore.period";
+  static final int DFAULT_ROLLING_UPGRADE_CHORE_PERIOD = 1000 * 60 * 5; // 5 
minutes in millis
+
+  static final String ROLLING_UPGRADE_CHORE_DELAY_KEY = 
"hbase.master.rolling.upgrade.chore.delay";
+  static final long DEFAULT_ROLLING_UPGRADE_CHORE_DELAY = 1000L * 60 * 10; // 
10 minutes in millis
+
+  private final static Logger LOG = 
LoggerFactory.getLogger(RollingUpgradeChore.class);
+  ProcedureExecutor<MasterProcedureEnv> procedureExecutor;
+  private TableDescriptors tableDescriptors;
+  private List<MigrateStoreFileTrackerProcedure> processingProcs = new 
ArrayList<>();
+  private boolean isMigratingDone;
+
+  public RollingUpgradeChore(MasterServices masterServices) {
+    this(masterServices.getConfiguration(), 
masterServices.getMasterProcedureExecutor(), 
masterServices.getTableDescriptors(), masterServices);
+  }
+
+  private RollingUpgradeChore(Configuration conf, 
ProcedureExecutor<MasterProcedureEnv> procedureExecutor, TableDescriptors 
tableDescriptors, Stoppable stopper){
+    super(RollingUpgradeChore.class.getSimpleName(), stopper,
+      conf.getInt(ROLLING_UPGRADE_CHORE_PERIOD_KEY, 
DFAULT_ROLLING_UPGRADE_CHORE_PERIOD),
+      conf.getLong(ROLLING_UPGRADE_CHORE_DELAY_KEY, 
DEFAULT_ROLLING_UPGRADE_CHORE_DELAY),
+      TimeUnit.valueOf(conf.get(ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY, 
DEFAULT_ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY)));
+    this.procedureExecutor = procedureExecutor;
+    this.tableDescriptors = tableDescriptors;
+  }
+
+  @Override
+  protected void chore() {
+    migrateStoreFileTracker(5);
+    if (isMigratingDone) {
+      LOG.info("All Rolling-Upgrade tasks are complete, shutdown 
RollingUpgradeChore!");
+      shutdown();
+    }
+  }
+
+  private void migrateStoreFileTracker(int concurrentCount){
+    Iterator<MigrateStoreFileTrackerProcedure> iter = 
processingProcs.iterator();
+    while(iter.hasNext()){
+      MigrateStoreFileTrackerProcedure proc = iter.next();
+      if(procedureExecutor.isFinished(proc.getProcId())){
+        iter.remove();
+      }
+    }
+    // No new migration procedures will be submitted until
+    // all procedures executed last time are completed.
+    if (!processingProcs.isEmpty()) {
+      return;
+    }
+
+    Map<String, TableDescriptor> migrateSFTTables;
+    try {
+      migrateSFTTables = 
tableDescriptors.getAll().entrySet().stream().filter(entry -> {
+        TableDescriptor td = entry.getValue();
+        return 
StringUtils.isEmpty(td.getValue(StoreFileTrackerFactory.TRACKER_IMPL));
+      }).limit(concurrentCount).collect(Collectors.toMap(e -> e.getKey(), e -> 
e.getValue()));
+    } catch (IOException e) {
+      LOG.warn("Failed to migrate StoreFileTracker", e);
+      return;
+    }
+
+    if (migrateSFTTables.isEmpty()) {
+      LOG.info("There is no table to migrate StoreFileTracker!");
+      isMigratingDone = true;

Review comment:
       Why not just return true or false?

##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/migrate/RollingUpgradeChore.java
##########
@@ -0,0 +1,131 @@
+/*
+ * 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.hadoop.hbase.master.migrate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.ScheduledChore;
+import org.apache.hadoop.hbase.Stoppable;
+import org.apache.hadoop.hbase.TableDescriptors;
+import org.apache.hadoop.hbase.client.TableDescriptor;
+import org.apache.hadoop.hbase.master.MasterServices;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.MigrateStoreFileTrackerProcedure;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * To avoid too many migrating/upgrade threads to be submitted at the time 
during master
+ * initialization, RollingUpgradeChore handles all rolling-upgrade tasks.
+ * */
+@InterfaceAudience.Private
+public class RollingUpgradeChore extends ScheduledChore {
+
+  public static final String ROLLING_UPGRADE_CHORE_ENABLED_KEY =
+    "hbase.master.rolling.upgrade.chore.enabled";
+  public static final boolean DEFAULT_ROLLING_UPGRADE_CHORE_ENABLED = true;
+
+  static final String ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY =

Review comment:
       Do we need to have timeunit configurable here? I think seconds is enough?

##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/migrate/RollingUpgradeChore.java
##########
@@ -0,0 +1,131 @@
+/*
+ * 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.hadoop.hbase.master.migrate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.ScheduledChore;
+import org.apache.hadoop.hbase.Stoppable;
+import org.apache.hadoop.hbase.TableDescriptors;
+import org.apache.hadoop.hbase.client.TableDescriptor;
+import org.apache.hadoop.hbase.master.MasterServices;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.MigrateStoreFileTrackerProcedure;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * To avoid too many migrating/upgrade threads to be submitted at the time 
during master
+ * initialization, RollingUpgradeChore handles all rolling-upgrade tasks.
+ * */
+@InterfaceAudience.Private
+public class RollingUpgradeChore extends ScheduledChore {
+
+  public static final String ROLLING_UPGRADE_CHORE_ENABLED_KEY =
+    "hbase.master.rolling.upgrade.chore.enabled";
+  public static final boolean DEFAULT_ROLLING_UPGRADE_CHORE_ENABLED = true;
+
+  static final String ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY =
+    "hbase.master.rolling.upgrade.chore.timeunit";
+  static final String DEFAULT_ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY = 
TimeUnit.MILLISECONDS.name();
+
+  static final String ROLLING_UPGRADE_CHORE_PERIOD_KEY = 
"hbase.master.rolling.upgrade.chore.period";

Review comment:
       Since now we only schedule 5 procedures per time, I think here we should 
have a small interval? 5 seconds or 10 seconds by default?

##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/migrate/RollingUpgradeChore.java
##########
@@ -0,0 +1,131 @@
+/*
+ * 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.hadoop.hbase.master.migrate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.ScheduledChore;
+import org.apache.hadoop.hbase.Stoppable;
+import org.apache.hadoop.hbase.TableDescriptors;
+import org.apache.hadoop.hbase.client.TableDescriptor;
+import org.apache.hadoop.hbase.master.MasterServices;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.MigrateStoreFileTrackerProcedure;
+import 
org.apache.hadoop.hbase.regionserver.storefiletracker.StoreFileTrackerFactory;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * To avoid too many migrating/upgrade threads to be submitted at the time 
during master
+ * initialization, RollingUpgradeChore handles all rolling-upgrade tasks.
+ * */
+@InterfaceAudience.Private
+public class RollingUpgradeChore extends ScheduledChore {
+
+  public static final String ROLLING_UPGRADE_CHORE_ENABLED_KEY =
+    "hbase.master.rolling.upgrade.chore.enabled";
+  public static final boolean DEFAULT_ROLLING_UPGRADE_CHORE_ENABLED = true;
+
+  static final String ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY =
+    "hbase.master.rolling.upgrade.chore.timeunit";
+  static final String DEFAULT_ROLLING_UPGRADE_CHORE_TIMEUNIT_KEY = 
TimeUnit.MILLISECONDS.name();
+
+  static final String ROLLING_UPGRADE_CHORE_PERIOD_KEY = 
"hbase.master.rolling.upgrade.chore.period";
+  static final int DFAULT_ROLLING_UPGRADE_CHORE_PERIOD = 1000 * 60 * 5; // 5 
minutes in millis
+
+  static final String ROLLING_UPGRADE_CHORE_DELAY_KEY = 
"hbase.master.rolling.upgrade.chore.delay";

Review comment:
       10 minutes are too long? I suppose we could start migration immediately 
after master starts up... So maybe 30 seconds default is enough?




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