Wei-Chiu Chuang created RATIS-1885:
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Summary: Incorrect clientWriteRequest timer
Key: RATIS-1885
URL: https://issues.apache.org/jira/browse/RATIS-1885
Project: Ratis
Issue Type: Bug
Components: metrics
Affects Versions: 2.5.1
Reporter: Wei-Chiu Chuang
clientWriteRequest timer measures the time from receiving the client request
until the leader responds back.
But this timer is only initialized when the leader responds, so the timer is
always close to zero.
https://github.com/apache/ratis/blob/branch-2/ratis-server/src/main/java/org/apache/ratis/server/impl/RaftServerImpl.java#L840
The bug is accidentally fixed in 3.0.0 by RATIS-1693. But for users of 2.x this
may still be worth fixing.
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