HADOOP-19712 S3A: Deadlock in EvaluatingStatisticsMap.entryset() #8006

steveloughran · 2025-10-01T17:55:24Z

Reworked how entrySet() and values() work, using .forEach() iterators after reviewing what ConcurrentHashMap does internally; it does a (safe) traverse.

Add EvaluatingStatisticsMap.forEach() implementation which maps the passed in BiConsumer down to the evaluators.forEach, evaluating each value as it goes.

Use that in IOStatisticsBinding.snapshot() code.

Tests for all this.

For code changes:

Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

steveloughran · 2025-10-01T17:56:32Z

tested s3 london args -Dparallel-tests -DtestsThreadCount=8 -Dscale

[ERROR] Failures: 
[ERROR]   ITestS3APrefetchingInputStream.testReadLargeFileFully:130 [Maxiumum named action_executor_acquired.max] 
Expecting:                                                                                                                                                                                                                                             
 <0L>                                                                                                                                                                                                                                                  
to be greater than:                                                                                                                                                                                                                                    
 <0L>

hadoop-yetus · 2025-10-01T21:40:22Z

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 51s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s		The patch appears to include 1 new or modified test files.
			_ trunk Compile Tests _
-1 ❌	mvninstall	55m 44s	/branch-mvninstall-root.txt	root in trunk failed.
-1 ❌	compile	12m 48s	/branch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt	root in trunk failed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.
-1 ❌	compile	10m 53s	/branch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.txt	root in trunk failed with JDK Private Build-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.
+1 💚	checkstyle	0m 47s		trunk passed
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+1 💚	javadoc	1m 7s		trunk passed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04
+1 💚	javadoc	0m 41s		trunk passed with JDK Private Build-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09
+1 💚	spotbugs	2m 24s		trunk passed
+1 💚	shadedclient	42m 33s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 58s		the patch passed
-1 ❌	compile	12m 27s	/patch-compile-root-jdkUbuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.txt	root in the patch failed with JDK Ubuntu-11.0.27+6-post-Ubuntu-0ubuntu120.04.
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-1 ❌	javac	10m 39s	/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.txt	root in the patch failed with JDK Private Build-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.
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-0 ⚠️	checkstyle	0m 42s	/results-checkstyle-hadoop-common-project_hadoop-common.txt	hadoop-common-project/hadoop-common: The patch generated 3 new + 0 unchanged - 0 fixed = 3 total (was 0)
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+1 💚	spotbugs	2m 29s		the patch passed
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			_ Other Tests _
+1 💚	unit	22m 15s		hadoop-common in the patch passed.
+1 💚	asflicense	0m 40s		The patch does not generate ASF License warnings.
		223m 40s

Subsystem	Report/Notes
Docker	ClientAPI=1.51 ServerAPI=1.51 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8006/1/artifact/out/Dockerfile
GITHUB PR	#8006
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
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Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8006/1/testReport/
Max. process+thread count	3134 (vs. ulimit of 5500)
modules	C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common
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Reworked how entrySet() and values() work, using .forEach() iterators after reviewing what ConcurrentHashMap does internally; it does a (safe) traverse. Add EvaluatingStatisticsMap.forEach() implementation which maps the passed in BiConsumer down to the evaluators.forEach, evaluating each value as it goes. Use that in IOStatisticsBinding.snapshot() code. Tests for all this.

Add a test with a larger set of entries (env vars) and more assertions. Due diligence.

steveloughran · 2025-10-03T10:25:13Z

build failures are in the yarn-ui; it complains that node is too old

[INFO] --- frontend:1.11.2:install-node-and-yarn (install node and yarn) @ hadoop-yarn-applications-catalog-webapp ---
[INFO] testFailureIgnore property is ignored in non test phases
[INFO] Installing node version v12.22.1
[INFO] Unpacking /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/yetus-m2/hadoop-trunk-patch-1/com/github/eirslett/node/12.22.1/node-12.22.1-linux-x64.tar.gz into /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/ubuntu-focal/src/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp/target/node/tmp
[INFO] Copying node binary from /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/ubuntu-focal/src/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp/target/node/tmp/node-v12.22.1-linux-x64/bin/node to /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/ubuntu-focal/src/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp/target/node/node
[INFO] Installed node locally.
[INFO] Installing Yarn version v1.22.5
[INFO] Unpacking /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/yetus-m2/hadoop-trunk-patch-1/com/github/eirslett/yarn/1.22.5/yarn-1.22.5.tar.gz into /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/ubuntu-focal/src/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp/target/node/yarn
[INFO] Installed Yarn locally.
[INFO] 
[INFO] --- frontend:1.11.2:yarn (yarn install) @ hadoop-yarn-applications-catalog-webapp ---
[INFO] testFailureIgnore property is ignored in non test phases
[INFO] Running 'yarn ' in /home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-8006/ubuntu-focal/src/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-applications-catalog/hadoop-yarn-applications-catalog-webapp/target
[INFO] yarn install v1.22.5
[INFO] info No lockfile found.
[INFO] [1/4] Resolving packages...
[INFO] warning [email protected]: This version is deprecated. Please upgrade to the latest version or find support at https://www.herodevs.com/support/jquery-nes.
[INFO] warning [email protected]: For the actively supported Angular, see https://www.npmjs.com/package/@angular/core. AngularJS support has officially ended. For extended AngularJS support options, see https://goo.gle/angularjs-path-forward.
[INFO] warning [email protected]: For the actively supported Angular, see https://www.npmjs.com/package/@angular/core. AngularJS support has officially ended. For extended AngularJS support options, see https://goo.gle/angularjs-path-forward.
[INFO] warning apidoc > apidoc-core > [email protected]: Glob versions prior to v9 are no longer supported
[INFO] warning apidoc > apidoc-core > glob > [email protected]: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.
[INFO] [2/4] Fetching packages...
[INFO] error [email protected]: The engine "node" is incompatible with this module. Expected version ">=18". Got "12.22.1"
[INFO] error Found incompatible module.
[INFO] info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
[INFO] --------------------------------------

steveloughran · 2025-10-03T10:38:16Z

I see yarn-ui failure is already covered in a yarn jira.

hadoop-yetus · 2025-10-03T14:00:16Z

💔 -1 overall

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-1 ❌	compile	9m 47s	/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.txt	root in the patch failed with JDK Private Build-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.
-1 ❌	javac	9m 47s	/patch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.txt	root in the patch failed with JDK Private Build-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.
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			_ Other Tests _
+1 💚	unit	22m 17s		hadoop-common in the patch passed.
+1 💚	asflicense	0m 40s		The patch does not generate ASF License warnings.
		214m 43s

Subsystem	Report/Notes
Docker	ClientAPI=1.51 ServerAPI=1.51 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8006/3/artifact/out/Dockerfile
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Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8006/3/testReport/
Max. process+thread count	1438 (vs. ulimit of 5500)
modules	C: hadoop-common-project/hadoop-common U: hadoop-common-project/hadoop-common
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8006/3/console
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hadoop-yetus · 2025-10-06T19:32:53Z

💔 -1 overall

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-1 ❌	compile	9m 42s	/branch-compile-root-jdkPrivateBuild-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.txt	root in trunk failed with JDK Private Build-1.8.0_452-8u452-ga~~us1-0ubuntu1~~20.04-b09.
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+1 💚	spotbugs	2m 27s		the patch passed
+1 💚	shadedclient	40m 51s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	22m 32s		hadoop-common in the patch passed.
+1 💚	asflicense	0m 39s		The patch does not generate ASF License warnings.
		237m 33s

Subsystem	Report/Notes
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github-actions bot added trunk Common labels Oct 1, 2025

steveloughran force-pushed the s3/HADOOP-19712-EvaluatingStatisticsMap-deadlock branch from 40e7c25 to bfb91e8 Compare October 2, 2025 18:51

HADOOP-19712. S3A: Deadlock in EvaluatingStatisticsMap.entryset()

78880e8

Add a test with a larger set of entries (env vars) and more assertions. Due diligence.

HADOOP-19712. Checkstyles.

c3c15b8

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HADOOP-19712 S3A: Deadlock in EvaluatingStatisticsMap.entryset() #8006

HADOOP-19712 S3A: Deadlock in EvaluatingStatisticsMap.entryset() #8006

steveloughran commented Oct 1, 2025

Uh oh!

steveloughran commented Oct 1, 2025

Uh oh!

hadoop-yetus commented Oct 1, 2025

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steveloughran commented Oct 3, 2025

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steveloughran commented Oct 3, 2025

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hadoop-yetus commented Oct 3, 2025

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hadoop-yetus commented Oct 6, 2025

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HADOOP-19712 S3A: Deadlock in EvaluatingStatisticsMap.entryset() #8006

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HADOOP-19712 S3A: Deadlock in EvaluatingStatisticsMap.entryset() #8006

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steveloughran commented Oct 1, 2025

For code changes:

Uh oh!

steveloughran commented Oct 1, 2025

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hadoop-yetus commented Oct 1, 2025

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steveloughran commented Oct 3, 2025

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steveloughran commented Oct 3, 2025

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hadoop-yetus commented Oct 3, 2025

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hadoop-yetus commented Oct 6, 2025

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