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Posted to hdfs-dev@hadoop.apache.org by "ZanderXu (Jira)" <ji...@apache.org> on 2022/08/04 12:07:00 UTC

[jira] [Created] (HDFS-16717) Replace NPE with IOException in DataNode.class

ZanderXu created HDFS-16717:
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             Summary: 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


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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