pengWei Dou created ZOOKEEPER-4005:
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Summary: Zookeeper will not sync snapshot while get DIFF and cause
start failed.
Key: ZOOKEEPER-4005
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4005
Project: ZooKeeper
Issue Type: Bug
Components: server
Affects Versions: 3.5.6, 3.5.1
Reporter: pengWei Dou
The 3.5.1 version of ZK does not detect whether the snapshot file exists or
not. However, the snapshot file detection is added in the subsequent version.
When I tested the upgrade from 3.5.1 to 3.5.6, I found that after the ZK
election is completed, the, One of the ZK nodes has an error in the following
phase due to some network reasons, and then it will receive a diff reply. At
this time, because of diff, snapshotNeeded is assigned as false, and
isPreZAB1_0 is also is assigned to false. At this time, no snapshot file will
be generated, but there will be a log file, which will cause the startup
failure after the upgrade is completed.
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