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

摘要: 由于 java.lang.NullPointerException，垃圾收集无法回收日志区块。

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症狀

  • 高 L2 元数据利用率
  • 高日志利用率
  • 高容量 L2 利用率

区块管理器 （cm.log） 记录以下错误： 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)

验证日志区块任务扫描程序是否在cm.log文件中引发异常：
# 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

空指针异常错误 JournalChunkGCTaskScanner 可能会导致日志垃圾收集问题，最终导致元数据开销过高。

解析度

将 ECS Appliance 软件升级到 3.8.0.6 或更高版本。

受影響的產品

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

產品

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 Software ...
文章屬性
文章編號: 000227107
文章類型: Solution
上次修改時間: 10 9月 2025
版本:  4
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