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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/03/13 17:30:00 UTC
[jira] [Work logged] (HIVE-27135) Cleaner fails with FileNotFoundException
[ https://issues.apache.org/jira/browse/HIVE-27135?focusedWorklogId=850714&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-850714 ]
ASF GitHub Bot logged work on HIVE-27135:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Mar/23 17:29
Start Date: 13/Mar/23 17:29
Worklog Time Spent: 10m
Work Description: mdayakar opened a new pull request, #4114:
URL: https://github.com/apache/hive/pull/4114
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### What changes were proposed in this pull request?
The changes will fix HIVE-27135 which was not fixed properly as a part of [HIVE-26481](https://issues.apache.org/jira/browse/HIVE-26481). Now it will not throw FileNotFoundException even staging directory got removed.
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### Why are the changes needed?
If it throws FileNotFoundException then Cleaner will not be able to clean the orphan files which are already compacted.
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### Does this PR introduce _any_ user-facing change?
No
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### How was this patch tested?
The patch is tested by remote debugging, when the FileSystem listing the files just removed one of the staging directory but it didn't throw FNFE as staging directory has to exclude while listing.
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Issue Time Tracking
-------------------
Worklog Id: (was: 850714)
Remaining Estimate: 0h
Time Spent: 10m
> Cleaner fails with FileNotFoundException
> ----------------------------------------
>
> Key: HIVE-27135
> URL: https://issues.apache.org/jira/browse/HIVE-27135
> Project: Hive
> Issue Type: Bug
> Reporter: Dayakar M
> Assignee: Dayakar M
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The compaction fails when the Cleaner tried to remove a missing directory from HDFS.
> {code:java}
> 2023-03-06 07:45:48,331 ERROR org.apache.hadoop.hive.ql.txn.compactor.Cleaner: [Cleaner-executor-thread-12]: Caught exception when cleaning, unable to complete cleaning of id:39762523,dbname:test,tableName:test_table,partName:null,state:,type:MINOR,enqueueTime:0,start:0,properties:null,runAs:hive,tooManyAborts:false,hasOldAbort:false,highestWriteId:989,errorMessage:null,workerId: null,initiatorId: null java.io.FileNotFoundException: File hdfs:/cluster/warehouse/tablespace/managed/hive/test.db/test_table/.hive-staging_hive_2023-03-06_07-45-23_120_4659605113266849995-73550 does not exist.
> at org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1275)
> at org.apache.hadoop.hdfs.DistributedFileSystem$DirListingIterator.<init>(DistributedFileSystem.java:1249)
> at org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1194)
> at org.apache.hadoop.hdfs.DistributedFileSystem$25.doCall(DistributedFileSystem.java:1190)
> at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at org.apache.hadoop.hdfs.DistributedFileSystem.listLocatedStatus(DistributedFileSystem.java:1208)
> at org.apache.hadoop.fs.FileSystem.listLocatedStatus(FileSystem.java:2144)
> at org.apache.hadoop.fs.FileSystem$5.handleFileStat(FileSystem.java:2332)
> at org.apache.hadoop.fs.FileSystem$5.hasNext(FileSystem.java:2309)
> at org.apache.hadoop.util.functional.RemoteIterators$WrappingRemoteIterator.sourceHasNext(RemoteIterators.java:432)
> at org.apache.hadoop.util.functional.RemoteIterators$FilteringRemoteIterator.fetch(RemoteIterators.java:581)
> at org.apache.hadoop.util.functional.RemoteIterators$FilteringRemoteIterator.hasNext(RemoteIterators.java:602)
> at org.apache.hadoop.hive.ql.io.AcidUtils.getHdfsDirSnapshots(AcidUtils.java:1435)
> at org.apache.hadoop.hive.ql.txn.compactor.Cleaner.removeFiles(Cleaner.java:287)
> at org.apache.hadoop.hive.ql.txn.compactor.Cleaner.clean(Cleaner.java:214)
> at org.apache.hadoop.hive.ql.txn.compactor.Cleaner.lambda$run$0(Cleaner.java:114)
> at org.apache.hadoop.hive.ql.txn.compactor.CompactorUtil$ThrowingRunnable.lambda$unchecked$0(CompactorUtil.java:54)
> at java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1640)
> 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}
> h4.
> This issue got fixed as a part of HIVE-26481 but here its not fixed completely. [Here|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java#L1541] FileUtils.listFiles() API which returns a RemoteIterator<LocatedFileStatus>. So while iterating over, it checks if it is a directory and recursive listing then it will try to list files from that directory but if that directory is removed by other thread/task then it throws FileNotFoundException. Here the directory which got removed is the .staging directory which needs to be excluded through by using passed filter.
>
> So here we can use _*org.apache.hadoop.hive.common.FileUtils#listStatusRecursively()*_ [API|https://github.com/apache/hive/blob/master/common/src/java/org/apache/hadoop/hive/common/FileUtils.java#L372] which will apply the filter before listing the files from that directory which will avoid FileNotFoundException.
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