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https://issues.apache.org/jira/browse/HBASE-12114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14151895#comment-14151895
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Lars Hofhansl commented on HBASE-12114:
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+1
There will be no collissions as the Java HashMap uses a hashCode *and* equals.
> meta table cache is broken and cause 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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