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https://issues.apache.org/jira/browse/HDFS-10555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15363005#comment-15363005
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Colin Patrick McCabe commented on HDFS-10555:
---------------------------------------------
Thanks, [~umamaheswararao], [~jingzhao], and [~kihwal].
> 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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