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From "Jiandan Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12348) disable removing blocks to trash while rolling upgrade
Date Thu, 24 Aug 2017 09:54:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jiandan Yang  updated HDFS-12348:
---------------------------------
    Attachment: HDFS-12348.003.patch

> disable removing blocks to trash while rolling upgrade
> ------------------------------------------------------
>
>                 Key: HDFS-12348
>                 URL: https://issues.apache.org/jira/browse/HDFS-12348
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode
>            Reporter: Jiandan Yang 
>            Assignee: Jiandan Yang 
>         Attachments: HDFS-12348.001.patch, HDFS-12348.002.patch, HDFS-12348.003.patch
>
>
> DataNode remove block file and meta file to trash while rolling upgrade,and do delete
when
> executing finalize. 
> This  leads disk of datanode to be full, because
> (1) frequently creating and deleting files(eg,Hbase compaction);
> (2) cluster is very big, and rolling upgrade often last several days;
> Current our solution is clean trash by hand, but this is very dangerous in product environment.

> we think disable trash of datanode maybe a good method to avoid disk to be full.



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