li4wang commented on code in PR #2254: URL: https://github.com/apache/zookeeper/pull/2254#discussion_r2122042468
########## zookeeper-server/src/main/java/org/apache/zookeeper/server/ZKDatabase.java: ########## @@ -320,17 +323,30 @@ public void addCommittedProposal(Request request) { WriteLock wl = logLock.writeLock(); try { wl.lock(); - if (committedLog.size() > commitLogCount) { - committedLog.remove(); - minCommittedLog = committedLog.peek().getZxid(); - } if (committedLog.isEmpty()) { minCommittedLog = request.zxid; maxCommittedLog = request.zxid; + } else if (request.zxid <= maxCommittedLog) { + // This could happen if lastProcessedZxid is rewinded and database is re-synced. + // Currently, it only happens in test codes, but it should also be safe for production path. Review Comment: How about adding a test case for the scenario? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@zookeeper.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org