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Posted to dev@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2013/11/12 01:59:18 UTC
[jira] [Resolved] (HBASE-9935) Slight perf improvement: Avoid
KeyValue.getRowLength() at some places
[ https://issues.apache.org/jira/browse/HBASE-9935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lars Hofhansl resolved HBASE-9935.
----------------------------------
Resolution: Invalid
> Slight perf improvement: Avoid KeyValue.getRowLength() at some places
> ---------------------------------------------------------------------
>
> Key: HBASE-9935
> URL: https://issues.apache.org/jira/browse/HBASE-9935
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Priority: Minor
> Attachments: 9935-0.94.txt
>
>
> Here's an example:
> {code}
> KeyValue.createLastOnRow(
> kv.getBuffer(), kv.getRowOffset(), kv.getRowLength(),
> kv.getBuffer(), kv.getFamilyOffset(), kv.getFamilyLength(),
> kv.getBuffer(), kv.getQualifierOffset(), kv.getQualifierLength());
> {code}
> Looks harmless enough, but that actually recalculates the rowlength 5 times. And each time it needs to decode the rowlength again from the bytes of the KV.
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