[HDDS-10548] [snapshot-LR] OM is getting shutdown due to Snapshot chain corruption in an LR setup

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Component/s: Ozone Manager, Snapshot
• Labels: ozone-snapshot
• Assignee: Hemant Kumar
• Reporter: Jyotirmoy Sinha
• Created: 18/Mar/24 15:09
• Updated: 06/Jun/24 00:18
• Resolved: 29/Apr/24 20:43

Description

OM is getting shutdown due to Snapshot chain corruption in an LR setup

Scenario :

• Generate data over parallel threads over various volume/buckets
• Perform parallel snapshot create/delete/list operations over above buckets
• Perform parallel snapdiff operations over each bucket
• Perform parallel read operations of snapshot contents
• Introduce OM and cluster restarts in between along with DN decommissioning and balancer restarts.

OM Leader error stacktrace -

2024-03-14 04:07:13,525 INFO [JvmPauseMonitor0]-org.apache.ratis.util.JvmPauseMonitor: JvmPauseMonitor-om232: Started
2024-03-14 04:07:13,534 INFO [main]-org.apache.hadoop.ozone.om.OzoneManager: Starting secret key client.
2024-03-14 04:07:13,615 ERROR [OM StateMachine ApplyTransaction Thread - 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: CreateSnapshot
traceID: ""
success: false
message: "java.io.IOException: Snapshot chain is corrupted.\n\tat org.apache.hadoop.ozone.om.SnapshotChainManager.validateSnapshotChain(SnapshotChainManager.java:550)\n\tat org.apache.hadoop.ozone.om.SnapshotChainManager.getLatestPathSnapshotId(SnapshotChainManager.java:378)\n\tat org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotCreateRequest.addSnapshotInfoToSnapshotChainAndCache(OMSnapshotCreateRequest.java:232)\n\tat org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotCreateRequest.validateAndUpdateCache(OMSnapshotCreateRequest.java:162)\n\tat org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleWriteRequest(OzoneManagerRequestHandler.java:378)\n\tat org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.runCommand(OzoneManagerStateMachine.java:568)\n\tat org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.lambda$1(OzoneManagerStateMachine.java:363)\n\tat java.util.concurrent.CompletableFuture$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:550)
        at org.apache.hadoop.ozone.om.SnapshotChainManager.getLatestPathSnapshotId(SnapshotChainManager.java:378)
        at org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotCreateRequest.addSnapshotInfoToSnapshotChainAndCache(OMSnapshotCreateRequest.java:232)
        at org.apache.hadoop.ozone.om.request.snapshot.OMSnapshotCreateRequest.validateAndUpdateCache(OMSnapshotCreateRequest.java:162)
        at org.apache.hadoop.ozone.protocolPB.OzoneManagerRequestHandler.handleWriteRequest(OzoneManagerRequestHandler.java:378)
        at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.runCommand(OzoneManagerStateMachine.java:568)
        at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.lambda$1(OzoneManagerStateMachine.java:363)
        at java.util.concurrent.CompletableFuture$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:404)
        at org.apache.hadoop.ozone.om.ratis.OzoneManagerStateMachine.lambda$2(OzoneManagerStateMachine.java:379)
        at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:616)
        at java.util.concurrent.CompletableFuture$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)
2024-03-14 04:07:13,620 INFO [shutdown-hook-0]-org.apache.ranger.audit.provider.AuditProviderFactory: ==> JVMShutdownHook.run()
2024-03-14 04:07:13,621 INFO [shutdown-hook-0]-org.apache.ranger.audit.provider.AuditProviderFactory: JVMShutdownHook: Signalling async audit cleanup to start. 

Issue Links

• duplicates: HDDS-10524 Snapshot chain corruption