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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-7611) deleteSnapshot and delete of a file can leave orphaned blocks in the blocksMap on NameNode restart.
Date Wed, 28 Jan 2015 23:22:36 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao reassigned HDFS-7611:
-------------------------------

    Assignee: Jing Zhao  (was: Byron Wong)

> deleteSnapshot and delete of a file can leave orphaned blocks in the blocksMap on NameNode
restart.
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-7611
>                 URL: https://issues.apache.org/jira/browse/HDFS-7611
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.6.0
>            Reporter: Konstantin Shvachko
>            Assignee: Jing Zhao
>            Priority: Critical
>         Attachments: HDFS-7611.000.patch, HDFS-7611.001.patch, HDFS-7611.002.patch, blocksNotDeletedTest.patch,
testTruncateEditLogLoad.log
>
>
> If quotas are enabled a combination of operations *deleteSnapshot* and *delete* of a
file can leave  orphaned  blocks in the blocksMap on NameNode restart. They are counted as
missing on the NameNode, and can prevent NameNode from coming out of safeMode and could cause
memory leak during startup.



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