[jira] [Reopened] (FLINK-17479) Occasional checkpoint failure due to null pointer exception in Flink version 1.10

["Yu Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-17479?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yu Li reopened FLINK-17479:
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[~nobleyd] could the problem reproduce stably with JDK 8u60? If so, could you share more details about your job? Thanks.

If this is some common issue with JDK 8u60, I believe we should write it down in our document (currently the [software requirement in our document|https://ci.apache.org/projects/flink/flink-docs-release-1.11/ops/deployment/cluster_setup.html] only says Java 1.8.x or later).

> Occasional checkpoint failure due to null pointer exception in Flink version 1.10
> ---------------------------------------------------------------------------------
>
>                 Key: FLINK-17479
>                 URL: https://issues.apache.org/jira/browse/FLINK-17479
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.10.0
>         Environment: Flink1.10.0
> jdk1.8.0_60
>            Reporter: nobleyd
>            Priority: Major
>         Attachments: image-2020-04-30-18-44-21-630.png, image-2020-04-30-18-55-53-779.png
>
>
> I upgrade the standalone cluster(3 machines) from flink1.9 to flink1.10.0 latest. My job running normally in flink1.9 for about half a year, while I get some job failed due to null pointer exception when checkpoing in  flink1.10.0.
> Below is the exception log:
> !image-2020-04-30-18-55-53-779.png!
> I have checked the StreamTask(882), and is shown below. I think the only case is that checkpointMetaData is null that can lead to a null pointer exception.
> !image-2020-04-30-18-44-21-630.png!
> I do not know why, is there anyone can help me? The problem only occurs in Flink1.10.0 for now, it works well in flink1.9. I give the some conf info(some different to the default) also in below, guessing that maybe it is an error for configuration mistake.
> some conf of my flink1.10.0:
>  
> {code:java}
> taskmanager.memory.flink.size: 71680m
> taskmanager.memory.framework.heap.size: 512m
> taskmanager.memory.framework.off-heap.size: 512m
> taskmanager.memory.task.off-heap.size: 17920m
> taskmanager.memory.managed.size: 512m
> taskmanager.memory.jvm-metaspace.size: 512m
> taskmanager.memory.network.fraction: 0.1
> taskmanager.memory.network.min: 1024mb
> taskmanager.memory.network.max: 1536mb
> taskmanager.memory.segment-size: 128kb
> rest.port: 8682
> historyserver.web.port: 8782high-availability.jobmanager.port: 13141,13142,13143,13144
> blob.server.port: 13146,13147,13148,13149taskmanager.rpc.port: 13151,13152,13153,13154
> taskmanager.data.port: 13156metrics.internal.query-service.port: 13161,13162,13163,13164,13166,13167,13168,13169env.java.home: /usr/java/jdk1.8.0_60/bin/java
> env.pid.dir: /home/work/flink-1.10.0{code}
>  
> Hope someone can help me solve it.
>  
>  



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