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https://issues.apache.org/jira/browse/HADOOP-2553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HADOOP-2553:
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Resolution: Fixed
Status: Resolved (was: Patch Available)
Committed (It passed tests!). Resolving. Thanks for the findings Tom.
> [hbase] Don't make Long objects calculating hbase type hash codes
> -----------------------------------------------------------------
>
> Key: HADOOP-2553
> URL: https://issues.apache.org/jira/browse/HADOOP-2553
> Project: Hadoop
> Issue Type: Improvement
> Components: contrib/hbase
> Reporter: stack
> Priority: Minor
> Fix For: 0.16.0
>
> Attachments: white-v2.patch, white.patch
>
>
> From a code perusal by Tom White:
> {code}
> ...
> 1. In Memcache.internalGet the following line doesn't seem to do anything.
> curKey.setVersion(itKey.getTimestamp() - 1);
> So why have curKey at all? Am I missing something?
> 2. Hashcode for HStoreKey (and others) uses the form Long.valueOf(...)
> for long fields. This creates an object each time - not sure if it's a
> problem (probably isn't) but as you've been doing some profiling I
> thought I'd mention it.
> ...
> {code}
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