You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hive.apache.org by "Ayush Saxena (Jira)" <ji...@apache.org> on 2022/09/26 05:13:00 UTC
[jira] [Commented] (HIVE-26495) MSCK repair perf issue HMSChecker ThreadPool is blocked at fs.listStatus
[ https://issues.apache.org/jira/browse/HIVE-26495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17609292#comment-17609292 ]
Ayush Saxena commented on HIVE-26495:
-------------------------------------
Committed to master.
Thanx [~nareshpr] for the contribution!!!
> MSCK repair perf issue HMSChecker ThreadPool is blocked at fs.listStatus
> ------------------------------------------------------------------------
>
> Key: HIVE-26495
> URL: https://issues.apache.org/jira/browse/HIVE-26495
> Project: Hive
> Issue Type: Bug
> Reporter: Naresh P R
> Assignee: Naresh P R
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h
> Remaining Estimate: 0h
>
> With hive.metastore.fshandler.threads = 15, all 15 *MSCK-GetPaths-xx* are slogging at following trace.
> {code:java}
> "MSCK-GetPaths-11" #12345 daemon prio=5 os_prio=0 tid= nid= waiting on condition [0x00007f9f099a6000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000003f92d1668> (a java.util.concurrent.CompletableFuture$Signaller)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1707)
> at java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
> ...
> at org.apache.hadoop.fs.s3a.S3AFileSystem.listStatus(S3AFileSystem.java:3230)
> at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1953)
> at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1995)
> at org.apache.hadoop.hive.metastore.HiveMetaStoreChecker$PathDepthInfoCallable.processPathDepthInfo(HiveMetaStoreChecker.java:550)
> at org.apache.hadoop.hive.metastore.HiveMetaStoreChecker$PathDepthInfoCallable.call(HiveMetaStoreChecker.java:543)
> at org.apache.hadoop.hive.metastore.HiveMetaStoreChecker$PathDepthInfoCallable.call(HiveMetaStoreChecker.java:525)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:750){code}
> We should take advantage of non-block listStatusIterator instead of listStatus which is a blocking call.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)