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  1. Apache Ozone
  2. HDDS-11068

OM down to Snapshot Chain Corruption

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      OM down to Snapshot Chain Corruption

      OM Error stacktrace -

      2024-06-25 14:51:14,293 ERROR [main]-org.apache.hadoop.ozone.om.SnapshotChainManager: Failure while loading snapshot chain.
      java.io.IOException: Snapshot chain corruption. All snapshots have not been added to the snapshot chain. Last snapshot added to chain : 750ae2ca-3f8d-4a1f-8655-9d15bd5ed84b
              at org.apache.hadoop.ozone.om.SnapshotChainManager.loadFromSnapshotInfoTable(SnapshotChainManager.java:324)
              at org.apache.hadoop.ozone.om.SnapshotChainManager.<init>(SnapshotChainManager.java:66)
              at org.apache.hadoop.ozone.om.OmMetadataManagerImpl.start(OmMetadataManagerImpl.java:565)
              at org.apache.hadoop.ozone.om.OmMetadataManagerImpl.<init>(OmMetadataManagerImpl.java:342)
              at org.apache.hadoop.ozone.om.OzoneManager.instantiateServices(OzoneManager.java:809)
              at org.apache.hadoop.ozone.om.OzoneManager.<init>(OzoneManager.java:687)
              at org.apache.hadoop.ozone.om.OzoneManager.createOm(OzoneManager.java:774)
              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:2041)
              at picocli.CommandLine.access$1500(CommandLine.java:148)
              at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2461)
              at picocli.CommandLine$RunLast.handle(CommandLine.java:2453)
              at picocli.CommandLine$RunLast.handle(CommandLine.java:2415)
              at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2273)
              at picocli.CommandLine$RunLast.execute(CommandLine.java:2417)
              at picocli.CommandLine.execute(CommandLine.java:2170)
              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) 
      2024-06-25 14:51:16,854 INFO [main]-org.apache.hadoop.hdds.utils.NativeLibraryLoader: Loading Library: ozone_rocksdb_tools
      2024-06-25 14:51:16,857 ERROR [main]-org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager: Native Library for raw sst file reading loading failed.
      org.apache.hadoop.hdds.utils.NativeLibraryNotLoadedException: Unable to load library ozone_rocksdb_tools from both java.library.path & resource file libozone_rocksdb_tools.so from jar.
              at org.apache.hadoop.hdds.utils.db.managed.ManagedRawSSTFileReader.loadLibrary(ManagedRawSSTFileReader.java:40)
              at org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager.initNativeLibraryForEfficientDiff(SnapshotDiffManager.java:285)
              at org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager.<init>(SnapshotDiffManager.java:259)
              at org.apache.hadoop.ozone.om.OmSnapshotManager.<init>(OmSnapshotManager.java:286)
              at org.apache.hadoop.ozone.om.OzoneManager.instantiateServices(OzoneManager.java:863)
              at org.apache.hadoop.ozone.om.OzoneManager.<init>(OzoneManager.java:687)
              at org.apache.hadoop.ozone.om.OzoneManager.createOm(OzoneManager.java:774)
              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:2041)
              at picocli.CommandLine.access$1500(CommandLine.java:148)
              at picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2461)
              at picocli.CommandLine$RunLast.handle(CommandLine.java:2453)
              at picocli.CommandLine$RunLast.handle(CommandLine.java:2415)
              at picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2273)
              at picocli.CommandLine$RunLast.execute(CommandLine.java:2417)
              at picocli.CommandLine.execute(CommandLine.java:2170)
              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) 
      2024-06-25 14:51:19,572 WARN [om229-OMStateMachineApplyTransactionThread - 0]-org.apache.hadoop.metrics2.util.MBeans: Error creating MBean object name: Hadoop:service=LayoutVersionManager,name=OMLayoutVersionManager
      org.apache.hadoop.metrics2.MetricsException: org.apache.hadoop.metrics2.MetricsException: Hadoop:service=LayoutVersionManager,name=OMLayoutVersionManager already exists!
              at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newObjectName(DefaultMetricsSystem.java:135)
              at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newMBeanName(DefaultMetricsSystem.java:110)
              at org.apache.hadoop.metrics2.util.MBeans.getMBeanName(MBeans.java:163)
              at org.apache.hadoop.metrics2.util.MBeans.register(MBeans.java:95)
              at org.apache.hadoop.metrics2.util.MBeans.register(MBeans.java:72)
              at org.apache.hadoop.ozone.upgrade.AbstractLayoutVersionManager.init(AbstractLayoutVersionManager.java:88)
              at org.apache.hadoop.ozone.om.upgrade.OMLayoutVersionManager.<init>(OMLayoutVersionManager.java:69)
              at org.apache.hadoop.ozone.om.upgrade.OMLayoutFeatureAspect.checkLayoutFeature(OMLayoutFeatureAspect.java:75)
              at org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotMoveDeletedKeysRequest.validateAndUpdateCache(OMSnapshotMoveDeletedKeysRequest.java:63)
              at org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.lambda$0(OzoneManagerRequestHandler.java:397)
              at org.apache.hadoop.util.MetricUtil.captureLatencyNs(MetricUtil.java:45)
              at org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleWriteRequestImpl(OzoneManagerRequestHandler.java:395)
              at org.apache.hadoop.ozone.protocolPB.RequestHandler.handleWriteRequest(RequestHandler.java:63)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.runCommand(OzoneManagerStateMachine.java:539)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.lambda$1(OzoneManagerStateMachine.java:357)
              at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
              at java.lang.Thread.run(Thread.java:748)
      Caused by: org.apache.hadoop.metrics2.MetricsException: Hadoop:service=LayoutVersionManager,name=OMLayoutVersionManager already exists!
              at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newObjectName(DefaultMetricsSystem.java:131)
              ... 18 more
      2024-06-25 14:51:19,579 INFO [main]-org.apache.ratis.grpc.server.GrpcService: om229: GrpcService started, listening on 9872
      2024-06-25 14:51:19,582 INFO [JvmPauseMonitor0]-org.apache.ratis.util.JvmPauseMonitor: JvmPauseMonitor-om229: Started
      2024-06-25 14:51:19,594 INFO [main]-org.apache.hadoop.ozone.om.OzoneManager: Starting secret key client.
      2024-06-25 14:51:19,678 ERROR [om229-OMDoubleBufferFlushThread]-org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer: Terminating with exit status 2: During flush to DB encountered error in OMDoubleBuffer flush thread om229-OMDoubleBufferFlushThread when handling OMRequest: cmdType: PurgeKeys
      traceID: ""
      success: true
      status: OKjava.lang.IllegalStateException: java.io.IOException: No snapshot exist with snapshotId: a7efa54d-8beb-4fd0-808c-400e173ca6e9
              at org.apache.hadoop.ozone.om.snapshot.SnapshotCache.lambda$2(SnapshotCache.java:166)
              at java.util.concurrent.ConcurrentHashMap.compute(ConcurrentHashMap.java:1853)
              at org.apache.hadoop.ozone.om.snapshot.SnapshotCache.get(SnapshotCache.java:154)
              at org.apache.hadoop.ozone.om.OmSnapshotManager.getSnapshot(OmSnapshotManager.java:690)
              at org.apache.hadoop.ozone.om.OmSnapshotManager.getSnapshot(OmSnapshotManager.java:678)
              at org.apache.hadoop.ozone.om.OmSnapshotManager.getSnapshot(OmSnapshotManager.java:661)
              at org.apache.hadoop.ozone.om.response.key.OMKeyPurgeResponse.addToDBBatch(OMKeyPurgeResponse.java:82)
              at org.apache.hadoop.ozone.om.response.OMClientResponse.checkAndUpdateDB(OMClientResponse.java:66)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.lambda$8(OzoneManagerDoubleBuffer.java:408)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.addToBatchWithTrace(OzoneManagerDoubleBuffer.java:253)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.addToBatch(OzoneManagerDoubleBuffer.java:407)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushBatch(OzoneManagerDoubleBuffer.java:353)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushCurrentBuffer(OzoneManagerDoubleBuffer.java:328)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushTransactions(OzoneManagerDoubleBuffer.java:295)
              at java.lang.Thread.run(Thread.java:748)
      Caused by: java.io.IOException: No snapshot exist with snapshotId: a7efa54d-8beb-4fd0-808c-400e173ca6e9
              at org.apache.hadoop.ozone.om.OmSnapshotManager$1.load(OmSnapshotManager.java:351)
              at org.apache.hadoop.ozone.om.OmSnapshotManager$1.load(OmSnapshotManager.java:1)
              at org.apache.hadoop.ozone.om.snapshot.SnapshotCache.lambda$2(SnapshotCache.java:158)
              ... 14 more
      2024-06-25 14:51:19,678 ERROR [om229-OMStateMachineApplyTransactionThread - 0]-org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine: Terminating with exit status 1: OM Ratis Server has received unrecoverable error, to avoid further DB corruption, terminating OM. Error Response received is:cmdType: SnapshotMoveDeletedKeys
      traceID: ""
      success: false
      message: "java.io.IOException: Snapshot chain is corrupted.\n\tat org.apache.hadoop.ozone.om.SnapshotChainManager.validateSnapshotChain(SnapshotChainManager.java:558)\n\tat org.apache.hadoop.ozone.om.SnapshotChainManager.hasNextPathSnapshot(SnapshotChainManager.java:453)\n\tat org.apache.hadoop.ozone.om.snapshot.SnapshotUtils.getNextActiveSnapshot(SnapshotUtils.java:157)\n\tat org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotMoveDeletedKeysRequest.validateAndUpdateCache(OMSnapshotMoveDeletedKeysRequest.java:81)\n\tat org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.lambda$0(OzoneManagerRequestHandler.java:397)\n\tat org.apache.hadoop.util.MetricUtil.captureLatencyNs(MetricUtil.java:45)\n\tat org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleWriteRequestImpl(OzoneManagerRequestHandler.java:395)\n\tat org.apache.hadoop.ozone.protocolPB.RequestHandler.handleWriteRequest(RequestHandler.java:63)\n\tat org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.runCommand(OzoneManagerStateMachine.java:539)\n\tat org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.lambda$1(OzoneManagerStateMachine.java:357)\n\tat java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)\n\tat java.lang.Thread.run(Thread.java:748)\n"
      status: INTERNAL_ERRORINTERNAL_ERROR org.apache.hadoop.ozone.om.exceptions.OMException: java.io.IOException: Snapshot chain is corrupted.
              at org.apache.hadoop.ozone.om.SnapshotChainManager.validateSnapshotChain(SnapshotChainManager.java:558)
              at org.apache.hadoop.ozone.om.SnapshotChainManager.hasNextPathSnapshot(SnapshotChainManager.java:453)
              at org.apache.hadoop.ozone.om.snapshot.SnapshotUtils.getNextActiveSnapshot(SnapshotUtils.java:157)
              at org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotMoveDeletedKeysRequest.validateAndUpdateCache(OMSnapshotMoveDeletedKeysRequest.java:81)
              at org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.lambda$0(OzoneManagerRequestHandler.java:397)
              at org.apache.hadoop.util.MetricUtil.captureLatencyNs(MetricUtil.java:45)
              at org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleWriteRequestImpl(OzoneManagerRequestHandler.java:395)
              at org.apache.hadoop.ozone.protocolPB.RequestHandler.handleWriteRequest(RequestHandler.java:63)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.runCommand(OzoneManagerStateMachine.java:539)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.lambda$1(OzoneManagerStateMachine.java:357)
              at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
              at java.lang.Thread.run(Thread.java:748)        at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.terminate(OzoneManagerStateMachine.java:381)
              at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.processResponse(OzoneManagerStateMachine.java:370)
              at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:616)
              at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:591)
              at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)
              at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1609)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
              at java.lang.Thread.run(Thread.java:748) 

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              swamirishi Swaminathan Balachandran
              jyosin Jyotirmoy Sinha
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                Updated:
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