[HADOOP-14003] Make additional KMS tomcat settings configurable

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.9.0
• Component/s: kms
• Target Version/s: 2.9.0
• Hadoop Flags: Reviewed

Release Note

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The KMS can now be configured with the additional environment variables `KMS_PROTOCOL`, `KMS_ACCEPT_COUNT`, and `KMS_ACCEPTOR_THREAD_COUNT`. See `kms-env.sh` for more information about these variables.

• Assignee: Andrew Wang
• Reporter: Andrew Wang
• Created: 20/Jan/17 00:38
• Updated: 26/Jan/17 22:21
• Resolved: 26/Jan/17 19:23

Description

Doing some Tomcat performance tuning on a loaded cluster, we found that acceptCount, acceptorThreadCount, and protocol can be useful. Let's make these configurable in the kms startup script.

Since the KMS is Jetty in 3.x, this is targeted at just branch-2.