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Posted to common-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/10/28 07:54:00 UTC
[jira] [Work logged] (HADOOP-17334) CosNInputStream should throw
exception when filesystem is closed
[ https://issues.apache.org/jira/browse/HADOOP-17334?focusedWorklogId=505607&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-505607 ]
ASF GitHub Bot logged work on HADOOP-17334:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 28/Oct/20 07:53
Start Date: 28/Oct/20 07:53
Worklog Time Spent: 10m
Work Description: yui2010 opened a new pull request #2420:
URL: https://github.com/apache/hadoop/pull/2420
…s closed
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Issue Time Tracking
-------------------
Worklog Id: (was: 505607)
Remaining Estimate: 0h
Time Spent: 10m
> CosNInputStream should throw exception when filesystem is closed
> ----------------------------------------------------------------
>
> Key: HADOOP-17334
> URL: https://issues.apache.org/jira/browse/HADOOP-17334
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs, fs/cos
> Affects Versions: 3.3.0
> Reporter: steven zhang
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Thread hangs when other thread call filesystem.close(). log as below
> 971 [main] INFO org.apache.hadoop.fs.cosn.CosNFileSystem - Open the file: [cosn://bigdata-test
> 1075 [main] ERROR org.apache.hadoop.util.BlockingThreadPoolExecutorService - Could not submit task to executor java.util.concurrent.ThreadPoolExecutor
> the thread hangs reason is :
> # filesystem is cached when multiple thread using FileSystem#get method for creating instance
> # CosNInputStream#read method is not check CosNFileSystem is closed
> # CosNInputStream is using multiple thread(CosNFileReadTask) for read and main thread will await when readbuffer status is init
> # CosNFileSystem#close method will shutdown boundedIOThreadPool . so CosNInputStream#CosNFileReadTask will not notify main thread and cause thread hangs
> so CosNInputStream should throw exception when filesystem is closed
>
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