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https://issues.apache.org/jira/browse/HDFS-16717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17583499#comment-17583499
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ASF GitHub Bot commented on HDFS-16717:
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Hexiaoqiao merged PR #4699:
URL: https://github.com/apache/hadoop/pull/4699
> Replace NPE with IOException in DataNode.class
> ----------------------------------------------
>
> Key: HDFS-16717
> URL: https://issues.apache.org/jira/browse/HDFS-16717
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: ZanderXu
> Assignee: ZanderXu
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> In current logic, if storage not yet initialized, it will throw a NPE in
> DataNode.class. Developers or SREs are very sensitive to NPE, so I feel that
> we can use IOException instead of NPE when storage not yet initialized.
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