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From "He Liangliang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12114) Meta table cache hashing may access the wrong table
Date Tue, 30 Sep 2014 15:11:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14153265#comment-14153265
] 

He Liangliang commented on HBASE-12114:
---------------------------------------

I will have a look and add a test case for this when back from vacation.

> Meta table cache hashing may access the wrong table
> ---------------------------------------------------
>
>                 Key: HBASE-12114
>                 URL: https://issues.apache.org/jira/browse/HBASE-12114
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>            Reporter: He Liangliang
>            Assignee: He Liangliang
>             Fix For: 0.94.24
>
>         Attachments: HBASE-12114.patch
>
>
> The cache key used a hash code from a weak hash algorithm Bytes.mapKey(tableName), which
can cause collisions in a quite high probability then make the client accessing a wrong region
from another table.
> Example: "2fx0" and "2fvn"



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