Details
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Bug
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Status: Open
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Critical
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Resolution: Unresolved
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3.6.2
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None
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None
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Debian 10 x64
openjdk version "11.0.8" 2020-07-14
OpenJDK Runtime Environment (build 11.0.8+10-post-Debian-1deb10u1)
OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Debian-1deb10u1, mixed mode, sharing)
Description
After running for a while, the entire cluster (3 zookeeper) crash suddenly, all of them logging:
2020-10-16 10:37:00,459 [myid:2] - WARN [NIOWorkerThread-4:NIOServerCnxn@373] - Close of session 0x0 java.io.IOException: ZooKeeperServer not running at org.apache.zookeeper.server.NIOServerCnxn.readLength(NIOServerCnxn.java:544) at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:332) at org.apache.zookeeper.server.NIOServerCnxnFactory$IOWorkRequest.doWork(NIOServerCnxnFactory.java:522) at org.apache.zookeeper.server.WorkerService$ScheduledWorkRequest.run(WorkerService.java:154) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) 2020-10-16 10:37:00,475 [myid:2] - ERROR [QuorumPeer[myid=2](plain=0.0.0.0:2181)(secure=disabled):QuorumPeer@1139] - Unable to load database on disk java.io.IOException: Unreasonable length = 5089607 at org.apache.jute.BinaryInputArchive.checkLength(BinaryInputArchive.java:166) at org.apache.jute.BinaryInputArchive.readBuffer(BinaryInputArchive.java:127) at org.apache.zookeeper.server.persistence.Util.readTxnBytes(Util.java:159) at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:768) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:352) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:258) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:303) at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:285) at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1093) at org.apache.zookeeper.server.quorum.QuorumPeer.getLastLoggedZxid(QuorumPeer.java:1249) at org.apache.zookeeper.server.quorum.FastLeaderElection.getInitLastLoggedZxid(FastLeaderElection.java:868) at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:941) at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1428)
Apparently the "corrupted" file appears in all the servers, so no solution such as "removing version-2 on the faulty server and letting replicate from a healthy one" 
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The entire cluster goes down, we have downtime, every-single-day since we upgraded from 3.4.9.