[IOTDB-2140] merge throw NullPointerException in cluster

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.12.3
• Fix Version/s: 0.12.4
• Component/s: Core/Compaction
• Labels: pull-request-available
• Assignee: Chao Wang
• Reporter: Chao Wang
• Created: 14/Dec/21 03:10
• Updated: 20/Dec/21 11:03
• Resolved: 16/Dec/21 01:29

Description

[MergeThread-0] | root.group_4-1639446442038 starts to merge 50 series | org.apache.iotdb.db.engine.merge.task.MergeMultiChunkTask (MergeMultiChunkTask.java:132) 
[MergeThread-0] | Runtime exception in merge root.group_4-1639446442038 | org.apache.iotdb.db.engine.merge.task.MergeTask (MergeTask.java:108) 
java.lang.NullPointerException: null
    at org.apache.iotdb.db.metadata.MManager.getSeriesType(MManager.java:712)
    at org.apache.iotdb.db.engine.merge.manage.MergeResource.getUnseqReaders(MergeResource.java:177)
    at org.apache.iotdb.db.engine.merge.task.MergeMultiChunkTask.mergePaths(MergeMultiChunkTask.java:181)
    at org.apache.iotdb.db.engine.merge.task.MergeMultiChunkTask.mergeSeries(MergeMultiChunkTask.java:145)
    at org.apache.iotdb.db.engine.merge.task.MergeTask.doMerge(MergeTask.java:177)
    at org.apache.iotdb.db.engine.merge.task.MergeTask.call(MergeTask.java:106)
    at org.apache.iotdb.db.engine.merge.task.MergeTask.call(MergeTask.java:51)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    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)

Issue Links

• links to: GitHub Pull Request #4584