[
https://issues.apache.org/jira/browse/HADOOP-19559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18004157#comment-18004157
]
ASF GitHub Bot commented on HADOOP-19559:
-----------------------------------------
fuatbasik commented on code in PR #7763:
URL: https://github.com/apache/hadoop/pull/7763#discussion_r2195042590
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Statistic.java:
##########
@@ -459,6 +459,14 @@ public enum Statistic {
"Gauge of active memory in use",
TYPE_GAUGE),
+ ANALYTICS_GET_REQUESTS(
+ StreamStatisticNames.STREAM_READ_ANALYTICS_GET_REQUESTS,
+ "GET requests made by analytics streams",
Review Comment:
This is nit but i believe an important one. We have to make sure we are
giving right name, description as well as doing it in the right place.
1/ why are these are here at these lines? This is neither lexicographic nor
following a logical separation. We probably need to move these up to Object IO
section.
2/ Next is the name for Stream read we had `STREAM_READ_OPENED` and we added
`STREAM_READ_ANALYTICS_OPENED` so following the same schema we probably need to
re-name this to `OBJECT_GET_ANALYTICS_REQUESTS` (there is no GET equivalent
currently because stream read opens = gets. Likewise for HEAD, we have
`OBJECT_METADATA_REQUESTS`, which we can add
`OBJECT_METADATA_ANALYTICS_REQUESTS`.
3/ we should make sure the messages are similar to others. For example, we
should call this `Count of object get requests made by analytics stream`. and
for head `Count of requests for object metadata made by analytics stream`
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/streams/AnalyticsStream.java:
##########
@@ -63,13 +68,23 @@ public AnalyticsStream(final ObjectReadParameters
parameters,
@Override
public int read() throws IOException {
throwIfClosed();
+ if (getPos() >= lengthLimit) {
+ return -1; // EOF reached due to length limit
Review Comment:
do we need to close underlying stream here before returning? We might check
this from other Stream implementations.
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/streams/AnalyticsRequestCallback.java:
##########
@@ -0,0 +1,52 @@
+/*
+ * 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.fs.s3a.impl.streams;
+
+import org.apache.hadoop.fs.s3a.statistics.S3AInputStreamStatistics;
+import org.apache.hadoop.fs.statistics.DurationTracker;
+import software.amazon.s3.analyticsaccelerator.util.RequestCallback;
+
+/**
+ * Implementation of AAL's RequestCallback interface that tracks analytics
operations.
+ */
+public class AnalyticsRequestCallback implements RequestCallback {
+ private final S3AInputStreamStatistics statistics;
+
+ /**
+ * Create a new callback instance.
+ * @param statistics the statistics to update
+ */
+ public AnalyticsRequestCallback(S3AInputStreamStatistics statistics) {
+ this.statistics = statistics;
+ }
+
+ @Override
+ public void onGetRequest() {
+ statistics.incrementAnalyticsGetRequests();
+ // Update ACTION_HTTP_GET_REQUEST statistic
+ DurationTracker tracker = statistics.initiateGetRequest();
Review Comment:
this duration will be always very close to 0 right? Why do we need to start
and close tracker?
##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/commit/ITestCommitOperationCost.java:
##########
@@ -174,10 +173,7 @@ private void abortActiveStream() throws IOException {
public void testCostOfCreatingMagicFile() throws Throwable {
describe("Files created under magic paths skip existence checks and marker
deletes");
- // Analytics accelerator currently does not support IOStatistics, this
will be added as
- // part of https://issues.apache.org/jira/browse/HADOOP-19364
- skipIfAnalyticsAcceleratorEnabled(getConfiguration(),
- "Analytics Accelerator currently does not support stream statistics");
+
Review Comment:
nit: extra whitespace
##########
hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/impl/streams/AnalyticsRequestCallback.java:
##########
@@ -0,0 +1,52 @@
+/*
+ * 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.fs.s3a.impl.streams;
+
+import org.apache.hadoop.fs.s3a.statistics.S3AInputStreamStatistics;
+import org.apache.hadoop.fs.statistics.DurationTracker;
+import software.amazon.s3.analyticsaccelerator.util.RequestCallback;
+
+/**
+ * Implementation of AAL's RequestCallback interface that tracks analytics
operations.
+ */
+public class AnalyticsRequestCallback implements RequestCallback {
+ private final S3AInputStreamStatistics statistics;
+
+ /**
+ * Create a new callback instance.
+ * @param statistics the statistics to update
+ */
+ public AnalyticsRequestCallback(S3AInputStreamStatistics statistics) {
+ this.statistics = statistics;
+ }
+
+ @Override
+ public void onGetRequest() {
+ statistics.incrementAnalyticsGetRequests();
+ // Update ACTION_HTTP_GET_REQUEST statistic
+ DurationTracker tracker = statistics.initiateGetRequest();
+ tracker.close();
+ }
+
+ @Override
+ public void onHeadRequest() {
+ statistics.incrementAnalyticsHeadRequests();
Review Comment:
now on GET you are updating both Analytics request counter and
ACTION_HTTP_GET_REQUEST (with tracker). Why are you not updating
OBJECT_METADATA_REQUESTS here?
> S3A: Analytics accelerator for S3 to be enabled by default
> ----------------------------------------------------------
>
> Key: HADOOP-19559
> URL: https://issues.apache.org/jira/browse/HADOOP-19559
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs/s3
> Affects Versions: 3.5.0, 3.4.2
> Reporter: Ahmar Suhail
> Priority: Major
> Labels: pull-request-available
>
> Make "analytics" the default input stream in S3A.
> Goals
> * Parquet performance through applications running queries over the data
> (spark etc)
> * Performance for other formats good as/better than today. Examples: avro
> manifests in iceberg, ORC in hive/spark
> * Performance for other uses as good as today (whole-file/sequential reads of
> parquet data in distcp etc)
> * better resilience to bad uses (incomplete reads not retaining http streams,
> buffer allocations on long-retained data)
> * efficient on applications like Impala, which caches parquet footers itself,
> and uses unbuffer() to discard all stream-side resources. Maybe just throw
> alway all state on unbuffer() and stop trying to be sophisticated, or support
> some new openFile flag which can be used to disable footer parsing
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