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https://issues.apache.org/jira/browse/HBASE-10597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910050#comment-13910050
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Anoop Sam John commented on HBASE-10597:
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ByteBufferArray#getMultiple() returns what len passed to it. Fine..
But then you can handle the ByteBufferIOEngine#read() return value there
itself?
> IOEngine#read() should return the number of bytes transferred
> -------------------------------------------------------------
>
> Key: HBASE-10597
> URL: https://issues.apache.org/jira/browse/HBASE-10597
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: Ted Yu
> Attachments: 10597-v1.txt
>
>
> IOEngine#read() is called by BucketCache#getBlock().
> IOEngine#read() should return the number of bytes transferred so that
> BucketCache#getBlock() can check this return value against the length
> obtained from bucketEntry.
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