Wei-Chiu Chuang created HADOOP-16130:
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Summary: Support delegation token operations in KMS Benchmark
Key: HADOOP-16130
URL: https://issues.apache.org/jira/browse/HADOOP-16130
Project: Hadoop Common
Issue Type: Improvement
Affects Versions: 3.3.0
Reporter: Wei-Chiu Chuang
At the last Hadoop Contributors Meetup, [~daryn] mentioned another KMS
throughput bottleneck is ZooKeeper -- KMS uses ZK to store delegation tokens.
ZK would be brought to a halt under heavy KMS dt operations. That sounds
critical especially given that in most deployments KMS share the same ZK quorum
as HDFS, it would cause NameNode failover.
The current KMS benchmark does not support delegation token operations
(addDelegationTokens, cancelDelegationToken, renewDelegationToken) so it's hard
to understand how bad it is, and hard to quantify the improvement of a fix.
File this jira to support those operations before we move on to the fix for the
ZK issue.
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