sonatype-lift[bot] commented on code in PR #1905:
URL: https://github.com/apache/zookeeper/pull/1905#discussion_r923043211
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zookeeper-server/src/main/java/org/apache/zookeeper/server/quorum/QuorumZooKeeperServer.java:
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@@ -116,9 +115,8 @@ private Request makeUpgradeRequest(long sessionId) {
synchronized (upgradeableSessionTracker) {
Review Comment:
*[SynchronizeOnNonFinalField](https://errorprone.info/bugpattern/SynchronizeOnNonFinalField):*
Synchronizing on non-final fields is not safe: if the field is ever updated,
different threads may end up locking on different objects.
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