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https://issues.apache.org/jira/browse/HDFS-17195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18029254#comment-18029254
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ASF GitHub Bot commented on HDFS-17195:
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github-actions[bot] closed pull request #6089: HDFS-17195. NullPointerException
thrown in DataXceiver when `dfs.encrypt.data.overwrite.downstream.derived.qop`
is true
URL: https://github.com/apache/hadoop/pull/6089
> NullPointerException thrown in DataXceiver when
> `dfs.encrypt.data.overwrite.downstream.derived.qop` is true
> -----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-17195
> URL: https://issues.apache.org/jira/browse/HDFS-17195
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.3.6
> Reporter: ConfX
> Priority: Major
> Labels: pull-request-available
>
> When `dfs.encrypt.data.overwrite.downstream.derived.qop` is true,
> `org.apache.hadoop.hdfs.server.datanode.DataXceiver#writeBlock` crashes with
> NullPointerException. This is because when the configuration is true, the
> block key is being obtained from a `datanode.blockPoolTokenSecretManager`
> that could still be null.
> To reproduce:
> 1. set `dfs.encrypt.data.overwrite.downstream.derived.qop` to true
> 2. run
> `org.apache.hadoop.hdfs.server.datanode.TestDataXceiverBackwardsCompat#testBackwardsCompat`
> We created a PR that provides a fix by making sure the
> blockPoolTokenSecretManager is not null while
> `dfs.encrypt.data.overwrite.downstream.derived.qop` is true.
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