Jyotirmoy Sinha created HDDS-8832:
-------------------------------------

             Summary: [snapshot] OM start failed with exception "Snapshot chain 
corruption"
                 Key: HDDS-8832
                 URL: https://issues.apache.org/jira/browse/HDDS-8832
             Project: Apache Ozone
          Issue Type: Bug
            Reporter: Jyotirmoy Sinha


Created 6000+ snapshots, and then restarted OM.

OM error stacktrace -
{code:java}
2023-06-13 05:44:39,448 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023153'
2023-06-13 05:44:39,457 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023184'
2023-06-13 05:44:39,459 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023200'
2023-06-13 05:44:39,462 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023213'
2023-06-13 05:44:39,463 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023226'
2023-06-13 05:44:39,465 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023239'
2023-06-13 05:44:39,467 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023252'
2023-06-13 05:44:39,469 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023265'
2023-06-13 05:44:39,471 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023278'
2023-06-13 05:44:39,473 [main] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Can't find SST '023291'
2023-06-13 05:44:39,571 [Thread-8385] INFO 
org.apache.ozone.rocksdiff.RocksDBCheckpointDiffer: Skipped the compaction 
entry. Compaction input files: [/var/lib/hadoop-ozone/om/data/om.db/023299.sst] 
and output files: [/var/lib/hadoop-ozone/om/data/om.db/023299.sst] are same.
2023-06-13 05:44:40,681 [main] ERROR 
org.apache.hadoop.ozone.om.OzoneManagerStarter: OM start failed with exception
java.io.IOException: Snapshot chain corruption. Previous snapshotId: 
115d7882-8831-477d-8497-cdef7235d811 is set for snapshotId: 
69d40951-6008-495d-8a0e-90ef9c4ac54a but no associated snapshot found in 
snapshot chain.
        at 
org.apache.hadoop.ozone.om.SnapshotChainManager.addSnapshotGlobal(SnapshotChainManager.java:87)
        at 
org.apache.hadoop.ozone.om.SnapshotChainManager.addSnapshot(SnapshotChainManager.java:283)
        at 
org.apache.hadoop.ozone.om.SnapshotChainManager.loadFromSnapshotInfoTable(SnapshotChainManager.java:273)
        at 
org.apache.hadoop.ozone.om.SnapshotChainManager.<init>(SnapshotChainManager.java:64)
        at 
org.apache.hadoop.ozone.om.OmMetadataManagerImpl.start(OmMetadataManagerImpl.java:519)
        at 
org.apache.hadoop.ozone.om.OmMetadataManagerImpl.<init>(OmMetadataManagerImpl.java:312)
        at 
org.apache.hadoop.ozone.om.OzoneManager.instantiateServices(OzoneManager.java:787)
        at org.apache.hadoop.ozone.om.OzoneManager.<init>(OzoneManager.java:667)
        at 
org.apache.hadoop.ozone.om.OzoneManager.createOm(OzoneManager.java:752)
        at 
org.apache.hadoop.ozone.om.OzoneManagerStarter$OMStarterHelper.start(OzoneManagerStarter.java:189)
        at 
org.apache.hadoop.ozone.om.OzoneManagerStarter.startOm(OzoneManagerStarter.java:86)
        at 
org.apache.hadoop.ozone.om.OzoneManagerStarter.call(OzoneManagerStarter.java:74)
        at org.apache.hadoop.hdds.cli.GenericCli.call(GenericCli.java:38)
        at picocli.CommandLine.executeUserObject(CommandLine.java:1953)
        at picocli.CommandLine.access$1300(CommandLine.java:145)
        at 
picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2352)
        at picocli.CommandLine$RunLast.handle(CommandLine.java:2346)
        at picocli.CommandLine$RunLast.handle(CommandLine.java:2311)
        at 
picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2179)
        at picocli.CommandLine.execute(CommandLine.java:2078)
        at org.apache.hadoop.hdds.cli.GenericCli.execute(GenericCli.java:100)
        at org.apache.hadoop.hdds.cli.GenericCli.run(GenericCli.java:91)
        at 
org.apache.hadoop.ozone.om.OzoneManagerStarter.main(OzoneManagerStarter.java:58)
2023-06-13 05:44:40,693 [shutdown-hook-0] INFO 
org.apache.hadoop.ozone.om.OzoneManagerStarter: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down OzoneManager at 
quasar-exotla-1.quasar-exotla.root.hwx.site/172.27.89.207
************************************************************/ {code}



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