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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10769) BlockIdManager.clear doesn't reset the counter for blockGroupIdGenerator
Date Thu, 18 Aug 2016 01:47:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yiqun Lin updated HDFS-10769:
-----------------------------
    Attachment: HDFS-10769.001.patch

> BlockIdManager.clear doesn't reset the counter for blockGroupIdGenerator
> ------------------------------------------------------------------------
>
>                 Key: HDFS-10769
>                 URL: https://issues.apache.org/jira/browse/HDFS-10769
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs
>    Affects Versions: 3.0.0-alpha1, 3.0.0-beta1
>            Reporter: Ewan Higgs
>            Assignee: Yiqun Lin
>            Priority: Minor
>              Labels: newbie
>         Attachments: HDFS-10769.001.patch
>
>
> BlockIdManager.clear resets the block id generator for contiguous blocks but not for
striped blocks:
> {code}
>   void clear() {
>     legacyGenerationStamp.setCurrentValue(GenerationStamp.LAST_RESERVED_STAMP);
>     generationStamp.setCurrentValue(GenerationStamp.LAST_RESERVED_STAMP);
>     getBlockIdGenerator().setCurrentValue(SequentialBlockIdGenerator
>       .LAST_RESERVED_BLOCK_ID);
>     legacyGenerationStampLimit = HdfsConstants.GRANDFATHER_GENERATION_STAMP;
>   }
> {code}
> This should have:
> {code}
> getBlockGroupIdGenerator().setCurrentValue(Long.MIN_VALUE);
> {code}



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