[jira] [Work logged] (HIVE-26495) MSCK repair perf issue HMSChecker ThreadPool is blocked at fs.listStatus

Thu, 01 Sep 2022 22:18:04 -0700 


     [ 
https://issues.apache.org/jira/browse/HIVE-26495?focusedWorklogId=805677&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-805677
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ASF GitHub Bot logged work on HIVE-26495:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 02/Sep/22 05:17
            Start Date: 02/Sep/22 05:17
    Worklog Time Spent: 10m 
      Work Description: sonarcloud[bot] commented on PR #3549:
URL: https://github.com/apache/hive/pull/3549#issuecomment-1235075518

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 805677)
    Time Spent: 1h 40m  (was: 1.5h)

> 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: 1h 40m
>  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.



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