Zhengdai Hu created STORM-3162:
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Summary: Race condition at updateHeartbeatCache
Key: STORM-3162
URL: https://issues.apache.org/jira/browse/STORM-3162
Project: Apache Storm
Issue Type: Bug
Components: storm-client, storm-core, storm-server
Affects Versions: 2.0.0
Reporter: Zhengdai Hu
Fix For: 2.0.0
This is discovered during testing for STORM-3133. Travis-CI log can be found
[here|https://travis-ci.org/apache/storm/jobs/408719153].
Specifically, updateHeartbeatCache can be invoked both by Nimbus (at
`Nimbus#updateHeartBeats`) and by Supervisor (at
`Nimbubs#updateCachedHeartbeatsFromWorker` at
`Nimbus#updateCachedHeartbeatsFromSupervisor`), causing
ConcurrentModificationException.
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