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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11229) HDFS-11056 failed to close meta file
Date Sat, 10 Dec 2016 17:35:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11229?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei-Chiu Chuang updated HDFS-11229:
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 3.0.0-alpha2
                   2.7.4
                   2.8.0
           Status: Resolved  (was: Patch Available)

Committed the patch to trunk, branch-2, branch-2.8 and branch-2.7.
Thanks [~yzhangal] and [~andrew.wang] for the quick review!

> HDFS-11056 failed to close meta file
> ------------------------------------
>
>                 Key: HDFS-11229
>                 URL: https://issues.apache.org/jira/browse/HDFS-11229
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.7.4, 3.0.0-alpha2
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>            Priority: Blocker
>             Fix For: 2.8.0, 2.7.4, 3.0.0-alpha2
>
>         Attachments: HDFS-11229.001.patch, HDFS-11229.branch-2.patch
>
>
> The following code failed to close the file after it is read.
> {code:title=FsVolumeImpl#loadLastPartialChunkChecksum}
>     RandomAccessFile raf = new RandomAccessFile(metaFile, "r");
>     raf.seek(offsetInChecksum);
>     raf.read(lastChecksum, 0, checksumSize);
>     return lastChecksum;
> {code}
> This must be fixed because every append operation uses this piece of code. Without an
explicit close, open files can reach system limit before RandomAccessFile objects are garbage
collected.



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