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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10597) IOEngine#read() should return the number of bytes transferred
Date Mon, 24 Feb 2014 18:15:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13910597#comment-13910597
] 

Ted Yu commented on HBASE-10597:
--------------------------------

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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