This is the documentation for CDH 5.1.x.
Documentation for other versions is available at Cloudera Documentation.

Known Issues Fixed in CDH 5.1.2

The following topics describe known issues fixed in CDH 5.1.2. See What's New in CDH 5.1.2 for a list of the most important upstream problems fixed in this release.

Apache Hadoop

—Jobs can hang on NodeManager decommission owing to a race condition when continuous scheduling is enabled.

Bug: YARN-2273

Severity: Low

Workaround: Disable continuous scheduling by setting yarn.scheduler.fair.continuous-scheduling-enabled to false

Apache HBase

— Sending a large amount of invalid data to the Thrift service can cause it to crash

Bug: HBASE-11052.

Severity: High

Workaround: None. This is a longstanding problem, not a new issue in CDH 5.1.

— The metric ageOfLastShippedOp never decreases

This can cause it to appear as though the cluster is in an inconsistent state even when there is no problem.

Bug: HBASE-11143.

Severity: High

Workaround: None.