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https://issues.apache.org/jira/browse/HDFS-15290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simbarashe Dzinamarira updated HDFS-15290:
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Attachment: HDFS-15290.001.patch
Target Version/s: 2.10.0 (was: 2.10.1)
Affects Version/s: 2.10.0
3.3.0
Status: Patch Available (was: Open)
> NPE in HttpServer during NameNode startup
> -----------------------------------------
>
> Key: HDFS-15290
> URL: https://issues.apache.org/jira/browse/HDFS-15290
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 3.3.0, 2.10.0, 2.7.8
> Reporter: Konstantin Shvachko
> Assignee: Simbarashe Dzinamarira
> Priority: Major
> Attachments: HDFS-15290.001.patch
>
>
> When NameNode starts it first starts HttpServer, then starts loading fsImage
> and edits. While loading the namesystem field in NameNode is null. I saw that
> a StandbyNode sends a checkpoint request, which fails with NPE because
> NNStorage is not instantiated yet.
> We should check the NameNode startup status before accepting checkpoint
> requests.
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