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https://issues.apache.org/jira/browse/HBASE-2299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-2299:
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Attachment: HBASE-2299.patch
Attached patch addresses some issues:
- Update HADOOP_CLASSPATH in hadoop-env.sh to reference the current ZooKeeper
jar packaged with HBase.
- Do not enable mapper output compression by default. (DFS IO benchmark for one
does not like this.)
- Increase default task child heap to 512 MB.
- Add -XX:+UseCompressedOops to JVM flags globally. See
http://wikis.sun.com/display/HotSpotInternals/CompressedOops . On EC2 in just
about all respects heap efficiency is the most important consideration.
- Copy mapred configuration from Hadoop conf dir to HBase conf dir so launching
mapreduce jobs with 'hbase' script will do what is expected.
- Disable speculative execution.
- Try harder to insure HBase AMIs are found when looking for public images
(just in case).
> [EC2] mapreduce fixups for PE
> -----------------------------
>
> Key: HBASE-2299
> URL: https://issues.apache.org/jira/browse/HBASE-2299
> Project: Hadoop HBase
> Issue Type: Sub-task
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Fix For: 0.20.4, 0.21.0
>
> Attachments: HBASE-2299.patch
>
>
> Scripts as packaged need tweaks for PE to successfully complete in
> multiclient (map-reduce) mode.
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