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From "Uma Maheswara Rao G (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10555) Unable to loadFSEdits due to a failure in readCachePoolInfo
Date Thu, 23 Jun 2016 16:34:16 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uma Maheswara Rao G updated HDFS-10555:
---------------------------------------
    Affects Version/s: 2.9.0

> Unable to loadFSEdits due to a failure in readCachePoolInfo
> -----------------------------------------------------------
>
>                 Key: HDFS-10555
>                 URL: https://issues.apache.org/jira/browse/HDFS-10555
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: caching, namenode
>    Affects Versions: 2.9.0
>            Reporter: Uma Maheswara Rao G
>            Assignee: Uma Maheswara Rao G
>            Priority: Critical
>             Fix For: 2.9.0
>
>         Attachments: HDFS-10555-00.patch
>
>
> Recently some tests are failing and unable to loadFSEdits due to a failure in readCachePoolInfo.
> Here in below code
> FSImageSerialization.java
> {code}
>   }
>     if ((flags & ~0x2F) != 0) {
>       throw new IOException("Unknown flag in CachePoolInfo: " + flags);
>     }
> {code}
> When all values of CachePool variable set to true, flags value & ~0x2F turns out
to non zero value. So, this condition failing due to the addition of 0x20  and changing &ing
value from ~0x1F to ~0x2F.
> May be to fix this issue, we may can change multiply value to ~0x3F 



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