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https://issues.apache.org/jira/browse/HBASE-10597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910597#comment-13910597
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Ted Yu commented on HBASE-10597:
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I thought about throwing exception when there is mismatch in length read.
Here is the method signature for BlockCache#getBlock():
{code}
Cacheable getBlock(BlockCacheKey cacheKey, boolean caching, boolean repeat);
{code}
If the above signature is kept, some RuntimeException would be thrown.
Is that Okay ?
> 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, 10597-v2.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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