[
https://issues.apache.org/jira/browse/HDDS-9581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aryan Gupta resolved HDDS-9581.
-------------------------------
Resolution: Not A Problem
> [MasterNode decommissioning] Unable to decommission OM, no OM leader found.
> ---------------------------------------------------------------------------
>
> Key: HDDS-9581
> URL: https://issues.apache.org/jira/browse/HDDS-9581
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Pratyush Bhatt
> Assignee: Aryan Gupta
> Priority: Major
>
> *Scenario:* Decommission OM.
> *Steps:*
> 1. Add OM decommissioning property(om151 in our case)
> {code:java}
> 2023-10-27 13:13:58,529|INFO|MainThread|machine.py:190 -
> run()||GUID=32a08a9e-0ca1-4ad8-8b56-325bd4f89b95|RUNNING: ozone admin om
> getserviceroles -id=ozone1 | egrep 'FOLLOWER|LEADER'
> 2023-10-27 13:14:02,605|INFO|MainThread|machine.py:205 -
> run()||GUID=32a08a9e-0ca1-4ad8-8b56-325bd4f89b95|om151 : FOLLOWER
> (ozn-decom75-5.ozn-decom75.xyz)
> 2023-10-27 13:14:02,606|INFO|MainThread|machine.py:212 -
> run()||GUID=32a08a9e-0ca1-4ad8-8b56-325bd4f89b95|om181 : FOLLOWER
> (ozn-decom75-3.ozn-decom75.xyz)
> 2023-10-27 13:14:02,606|INFO|MainThread|machine.py:212 -
> run()||GUID=32a08a9e-0ca1-4ad8-8b56-325bd4f89b95|om176 : LEADER
> (ozn-decom75-1.ozn-decom75.xyz)
> 2023-10-27 13:14:02,607|INFO|MainThread|machine.py:232 -
> run()||GUID=32a08a9e-0ca1-4ad8-8b56-325bd4f89b95|Exit Code: 0 {code}
> {code:java}
> 2023-10-27 13:14:06,505|INFO|MainThread|cm_apilib.py:818 - setConfig()|Update
> Config = {'ozone.om.decommissioned.nodes.ozone1': 'om151'} for Service = ozone
> {code}
> {code:java}
> 2023-10-27 13:22:18,099|INFO|MainThread|ozone.py:4203 -
> addOMDecommissionProperty()|Configs successfully copied
> 2023-10-27 13:22:18,099|INFO|MainThread|ozone.py:4400 -
> omNodeDecommission()|OM Decommissioning property addition successful! {code}
> 2. Decommission the OM.
> {code:java}
> 2023-10-27 13:22:19,713|INFO|MainThread|cm_apilib.py:1126 -
> roleCommandByName()|Command name = OzoneOMDecommissionCommand, ID = 12953
> 2023-10-27 13:22:19,714|INFO|MainThread|cm_apilib.py:1135 -
> roleCommandByName()|Wait until request completes...
> 2023-10-27 13:22:19,714|INFO|MainThread|cm_apilib.py:1565 -
> wait_until_request_complete()|Checking Command ID = 12953
> {code}
> *Observed:*
> Decommission of OM with id om151 failed.
> During the timeline of decommissioning property addition, seeing below io
> Exception logs in Leader _[om176 : LEADER (ozn-decom75-1.ozn-decom75.xyz)]_
> {code:java}
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection2 got exception when requesting
> votes: java.util.concurrent.ExecutionException:
> org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException: UNAVAILABLE: io
> exception
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection2 got exception when requesting
> votes: java.util.concurrent.ExecutionException:
> org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException: UNAVAILABLE: io
> exception
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection2: PRE_VOTE REJECTED received 0
> response(s) and 2 exception(s):
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.LeaderElection:
> Exception 0: java.util.concurrent.ExecutionException:
> org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException: UNAVAILABLE: io
> exception
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.LeaderElection:
> Exception 1: java.util.concurrent.ExecutionException:
> org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException: UNAVAILABLE: io
> exception
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection2 PRE_VOTE round 0: result REJECTED
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.RaftServer$Division:
> om176@group-9F198C4C3682: changes role from CANDIDATE to FOLLOWER at term 74
> for REJECTED
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.RoleInfo:
> om176: shutdown om176@group-9F198C4C3682-LeaderElection2
> 2023-10-27 13:17:11,943 INFO
> [om176@group-9F198C4C3682-LeaderElection2]-org.apache.ratis.server.impl.RoleInfo:
> om176: start om176@group-9F198C4C3682-FollowerState
> 2023-10-27 13:17:17,036 INFO
> [om176@group-9F198C4C3682-FollowerState]-org.apache.ratis.server.impl.FollowerState:
> om176@group-9F198C4C3682-FollowerState: change to CANDIDATE,
> lastRpcElapsedTime:5092555240ns, electionTimeout:5092ms
> 2023-10-27 13:17:17,037 INFO
> [om176@group-9F198C4C3682-FollowerState]-org.apache.ratis.server.impl.RoleInfo:
> om176: shutdown om176@group-9F198C4C3682-FollowerState
> 2023-10-27 13:17:17,037 INFO
> [om176@group-9F198C4C3682-FollowerState]-org.apache.ratis.server.RaftServer$Division:
> om176@group-9F198C4C3682: changes role from FOLLOWER to CANDIDATE at term
> 74 for changeToCandidate
> 2023-10-27 13:17:17,037 INFO
> [om176@group-9F198C4C3682-FollowerState]-org.apache.ratis.server.RaftServerConfigKeys:
> raft.server.leaderelection.pre-vote = true (default)
> 2023-10-27 13:17:17,037 INFO
> [om176@group-9F198C4C3682-FollowerState]-org.apache.ratis.server.impl.RoleInfo:
> om176: start om176@group-9F198C4C3682-LeaderElection3
> 2023-10-27 13:17:17,038 INFO
> [om176@group-9F198C4C3682-LeaderElection3]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection3 PRE_VOTE round 0: submit vote
> requests at term 74 for 411235:
> peers:[om151|rpc:ozn-decom75-5.ozn-decom75.xyz:1111|admin:|client:|dataStream:|priority:0|startupRole:FOLLOWER,
>
> om181|rpc:ozn-decom75-3.ozn-decom75.xyz:1111|admin:|client:|dataStream:|priority:0|startupRole:FOLLOWER,
>
> om176|rpc:ozn-decom75-1.ozn-decom75.xyz:1111|admin:|client:|dataStream:|priority:0|startupRole:FOLLOWER]|listeners:[],
> old=null
> 2023-10-27 13:17:17,038 INFO
> [om176@group-9F198C4C3682-LeaderElection3]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection3 got exception when requesting
> votes: java.util.concurrent.ExecutionException:
> org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException: UNAVAILABLE: io
> exception
> 2023-10-27 13:17:17,039 INFO
> [om176@group-9F198C4C3682-LeaderElection3]-org.apache.ratis.server.impl.LeaderElection:
> om176@group-9F198C4C3682-LeaderElection3 got exception when requesting
> votes: java.util.concurrent.ExecutionException:
> org.apache.ratis.thirdparty.io.grpc.StatusRuntimeException: UNAVAILABLE: io
> exception {code}
> Also saw _Unable to load library: ozone_rocksdb_tools_ before this error:
> {code:java}
> 2023-10-27 13:16:57,063 INFO
> [main]-org.apache.hadoop.hdds.utils.NativeLibraryLoader: Loading Library:
> ozone_rocksdb_tools
> 2023-10-27 13:16:57,064 WARN
> [main]-org.apache.hadoop.hdds.utils.NativeLibraryLoader: Unable to load
> library: ozone_rocksdb_tools
> java.io.IOException: Permission denied
> at java.io.UnixFileSystem.createFileExclusively(Native Method)
> at java.io.File.createTempFile(File.java:2024)
> at
> org.apache.hadoop.hdds.utils.NativeLibraryLoader.copyResourceFromJarToTemp(NativeLibraryLoader.java:140)
> at
> org.apache.hadoop.hdds.utils.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:116)
> at
> org.apache.hadoop.hdds.utils.db.managed.ManagedSSTDumpTool.<clinit>(ManagedSSTDumpTool.java:39)
> at
> org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager.initSSTDumpTool(SnapshotDiffManager.java:310)
> at
> org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager.<init>(SnapshotDiffManager.java:269)
> at
> org.apache.hadoop.ozone.om.OmSnapshotManager.<init>(OmSnapshotManager.java:277)
> at
> org.apache.hadoop.ozone.om.OzoneManager.instantiateServices(OzoneManager.java:840)
> at
> org.apache.hadoop.ozone.om.OzoneManager.<init>(OzoneManager.java:670)
> 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)
> 2023-10-27 13:16:57,066 INFO
> [main]-org.apache.hadoop.ozone.om.snapshot.SnapshotDiffManager: Shutting down
> executorService: 'SstDumpToolExecutor'
> 2023-10-27 13:16:57,207 WARN
> [main]-org.apache.hadoop.ozone.om.ratis.utils.OzoneManagerRatisUtils:
> ozone.om.ratis.snapshot.dir is not configured. Falling back to
> ozone.metadata.dirs config {code}
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