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Apache Hadoop 2.6.4 Release Notes

These release notes cover new developer and user-facing incompatibilities, important issues, features, and major improvements.

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• YARN-3154 | Blocker | Should not upload partial logs for MR jobs or other "short-running' applications

Applications which made use of the LogAggregationContext in their application will need to revisit this code in order to make sure that their logs continue to get rolled out.

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• HADOOP-11252 | Critical | RPC client does not time out by default

This fix includes public method interface change. A follow-up JIRA issue for this incompatibility for branch-2.7 is HADOOP-13579.