ECS: xDoctor: RAP178 - java.lang.NullPointerException nel JournalChunkGCTaskScanner.java

概要: Garbage Collection non riesce a recuperare i blocchi del journal a causa di java.lang.NullPointerException.

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現象

  • Utilizzo elevato dei metadati L2
  • Utilizzo elevato del journal
  • Utilizzo L2 ad alta capacità

Il gestore di blocchi (cm.log) registra il seguente errore: java.lang.NullPointerException

2024-01-16T16:38:57,443 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-117] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
        at com.emc.storageos.data.object.devicescanner.RepGroupObserverImpl.getFailedZones(RepGroupObserverImpl.java:781)
        at com.emc.storageos.data.chunkmanager.JournalChunkGCTaskScanner.isFailedZone(JournalChunkGCTaskScanner.java:360)
        at com.emc.storageos.data.chunkmanager.JournalChunkGCTaskScanner.runTask(JournalChunkGCTaskScanner.java:237)
        at com.emc.storageos.data.object.task.TaskScanner.scan(TaskScanner.java:81)
        at com.emc.storageos.data.object.Scanner$ScannerThread.run(Scanner.java:269)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131)
        at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:74)
        at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

Verificare che Journal Chunk Task Scanner generi un'eccezione nei file cm.log:
# svc_log -f "JournalChunkGCTaskScanner.java" "NullPointerException" -files cm-error.log* -start 10m

admin@ecs-node:~> svc_log -f "JournalChunkGCTaskScanner.java" "Exception" -files cm-error.log* -start 10m
svc_log v1.0.33 (svc_tools v2.20.0)                 Started 2024-12-13 11:51:29

Running on nodes:                        <All nodes>
Time range:                              2024-12-13 11:41:29 - 2024-12-13 11:51:29
Filter string(s):                        'JournalChunkGCTaskScanner.java' AND 'Exception'
File(s) to search:                               cm-error.log*

Show nodename(s):                        True
Show nodename(s):                        True

169.254.1.1 2024-12-13T11:43:54,021 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-074] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
169.254.1.1 2024-12-13T11:43:54,022 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-074] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
169.254.1.1 2024-12-13T11:43:54,036 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-074] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
.......
169.254.1.2 2024-12-13T11:50:18,135 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-282] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
169.254.1.2 2024-12-13T11:50:18,144 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-282] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
169.254.1.2 2024-12-13T11:50:18,149 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-282] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
.......
169.254.1.6 2024-12-13T11:49:43,389 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-080] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
169.254.1.6 2024-12-13T11:49:43,390 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-080] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
169.254.1.6 2024-12-13T11:49:43,411 [TaskScheduler-ChunkManager-DEFAULT_BACKGROUND_OPERATION-ScheduledExecutor-080] ERROR  JournalChunkGCTaskScanner.java (line 338) Exception from garbageCollect
java.lang.NullPointerException
.......

# svc_log -f "JournalChunkGCTaskScanner.java" "NullPointerException" -files 'cm-error.log' -start 1d -st hour -sh*

admin@ecs-node:~> svc_log -f "JournalChunkGCTaskScanner.java" "NullPointerException" -files 'cm-error.log' -start 1d -st hour -sh*
svc_log v1.0.33 (svc_tools v2.20.0)                 Started 2024-12-13 11:45:46

Running on nodes:                        <All nodes>
Time range:                              2024-12-12 11:45:46 - 2024-12-13 11:45:46
Filter string(s):                        'JournalChunkGCTaskScanner.java' AND 'NullPointerException'
File(s) to search:                               cm-error.log*

Show nodename(s):                        True
Show nodename(s):                        True

Count of message occurrences per hour:

                    # Log
Time                Entries
---------------------------
2024-12-12 11:xx    58500
2024-12-12 12:xx    224100
2024-12-12 13:xx    224203
2024-12-12 14:xx    224296
2024-12-12 15:xx    223711
2024-12-12 16:xx    224017
2024-12-12 17:xx    224071
2024-12-12 18:xx    224322
2024-12-12 19:xx    225198
2024-12-12 20:xx    224965
2024-12-12 21:xx    224214
2024-12-12 22:xx    224906
2024-12-12 23:xx    225339
2024-12-13 00:xx    224910
2024-12-13 01:xx    225692
2024-12-13 02:xx    225735
2024-12-13 03:xx    225804
2024-12-13 04:xx    226018
2024-12-13 05:xx    226271
2024-12-13 06:xx    226475
2024-12-13 07:xx    225937
2024-12-13 08:xx    226782
2024-12-13 09:xx    226879
2024-12-13 10:xx    226409
2024-12-13 11:xx    158538

Total:              5397292

原因

Errori Null Pointer Exception in JournalChunkGCTaskScanner può causare un problema di Garbage Collection del journal, che alla fine porta a metadati elevati sopra la testa.

解決方法

Aggiornare il software ECS Appliance alla versione 3.8.0.6 o successiva.

対象製品

ECS, ECS Appliance, ECS Appliance Gen 1, ECS Appliance Gen 2, ECS Appliance Gen 3

製品

ECS Appliance Hardware Gen3 EX5000, ECS Appliance Hardware Gen3 EX300, ECS Appliance Hardware Gen3 EX3000, ECS Appliance Hardware Gen1 U-Series, ECS Appliance Hardware Gen1 C-Series, ECS Appliance Hardware Gen2 C-Series , ECS Appliance Hardware Gen2 D-Series, ECS Appliance Hardware Gen2 U-Series, ECS Appliance Hardware Gen3 EX500, ECS Appliance Hardware Gen3 EXF900, ECS Appliance Hardware Series, ECS Appliance Software with Encryption, ECS Appliance Software without Encryption, ECS SD, ECS Software ...
文書のプロパティ
文書番号: 000227107
文書の種類: Solution
最終更新: 10 9月 2025
バージョン:  4
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