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https://issues.apache.org/jira/browse/CASSANDRA-15097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16886404#comment-16886404
]
Jay Zhuang commented on CASSANDRA-15097:
----------------------------------------
Add dTest results:
| Branch | uTest | jvm-dTest | dTest | dTest vnode |
| [15097-3.0|https://github.com/instagram/cassandra/tree/15097-3.0] | [#66
passed |https://circleci.com/gh/Instagram/cassandra/66] | [#67
passed|https://circleci.com/gh/Instagram/cassandra/67] | [#75
failed|https://circleci.com/gh/Instagram/cassandra/75], passed locally:
CASSANDRA-14595 | [#74 failed |
https://circleci.com/gh/Instagram/cassandra/74], passed locally:
CASSANDRA-14595 |
| [15097-3.11|https://github.com/instagram/cassandra/tree/15097-3.11] | [#69
passed|https://circleci.com/gh/Instagram/cassandra/69] | [#68
passed|https://circleci.com/gh/Instagram/cassandra/68] | [#77
failed|https://circleci.com/gh/Instagram/cassandra/77], passed locally:
CASSANDRA-14595 | [#76 failed|https://circleci.com/gh/Instagram/cassandra/76],
passed locally: CASSANDRA-14595 |
| [15097-trunk|https://github.com/instagram/cassandra/tree/15097-trunk] | [#72
passed|https://circleci.com/gh/Instagram/cassandra/72] | [#73
passed|https://circleci.com/gh/Instagram/cassandra/73] | [#78
passed|https://circleci.com/gh/Instagram/cassandra/78] | [#79
failed|https://circleci.com/gh/Instagram/cassandra/79], passed locally|
All failed dtests are passed locally with 10x run:
{{$ pytest --count=10 --cassandra-dir=~/cassandra $TESTS}}
> Avoid updating unchanged gossip state
> -------------------------------------
>
> Key: CASSANDRA-15097
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15097
> Project: Cassandra
> Issue Type: Bug
> Components: Cluster/Gossip
> Reporter: Jay Zhuang
> Assignee: Jay Zhuang
> Priority: Normal
>
> The node might get unchanged gossip states, the state might be just updated
> after sending a GOSSIP_SYN, then it will get the state that is already up to
> date. If the heartbeat in the GOSSIP_ACK message is updated, it will
> unnecessary re-apply the same state again, which could be costly like
> updating token change.
> It's very likely to happen for large cluster when a node startup, as the
> first gossip message will sync all endpoints tokens, it could take some time
> (in our case about 200 seconds), during that time, it keeps gossip with other
> node and get the full token states. Which causes lots of pending gossip tasks.
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