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https://issues.apache.org/jira/browse/HDFS-15217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17093197#comment-17093197
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Hudson commented on HDFS-15217:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #18187 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/18187/])
HDFS-15298 Fix the findbugs warnings introduced in HDFS-15217 (#1979) (github:
rev 62c26b91fd06f505a6e64fd32a36e5e67d06fa30)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
> Add more information to longest write/read lock held log
> --------------------------------------------------------
>
> Key: HDFS-15217
> URL: https://issues.apache.org/jira/browse/HDFS-15217
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Toshihiro Suzuki
> Assignee: Toshihiro Suzuki
> Priority: Major
> Fix For: 3.4.0
>
>
> Currently, we can see the stack trace in the longest write/read lock held
> log, but sometimes we need more information, for example, a target path of
> deletion:
> {code:java}
> 2020-03-10 21:51:21,116 [main] INFO namenode.FSNamesystem
> (FSNamesystemLock.java:writeUnlock(276)) - Number of suppressed
> write-lock reports: 0
> Longest write-lock held at 2020-03-10 21:51:21,107+0900 for 6ms via
> java.lang.Thread.getStackTrace(Thread.java:1559)
> org.apache.hadoop.util.StringUtils.getStackTrace(StringUtils.java:1058)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystemLock.writeUnlock(FSNamesystemLock.java:257)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystemLock.writeUnlock(FSNamesystemLock.java:233)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.writeUnlock(FSNamesystem.java:1706)
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java:3188)
> ...
> {code}
> Adding more information (opName, path, etc.) to the log is useful to
> troubleshoot.
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