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https://issues.apache.org/jira/browse/HDFS-17451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17840068#comment-17840068
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ASF GitHub Bot commented on HDFS-17451:
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haiyang1987 merged PR #6697:
URL: https://github.com/apache/hadoop/pull/6697
> RBF: fix spotbugs for redundant nullcheck of dns.
> -------------------------------------------------
>
> Key: HDFS-17451
> URL: https://issues.apache.org/jira/browse/HDFS-17451
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Jian Zhang
> Assignee: Jian Zhang
> Priority: Major
> Labels: pull-request-available
>
> h2. Dodgy code Warnings
> ||Code||Warning||
> |RCN|Redundant nullcheck of dns, which is known to be non-null in
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getCachedDatanodeReport(HdfsConstants$DatanodeReportType)|
> | |[Bug type RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE (click for
> details)|https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6655/8/artifact/out/branch-spotbugs-hadoop-hdfs-project_hadoop-hdfs-rbf-warnings.html#RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE]
> In class org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer
> In method
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getCachedDatanodeReport(HdfsConstants$DatanodeReportType)
> Value loaded from dns
> Return value of
> org.apache.hadoop.thirdparty.com.google.common.cache.LoadingCache.get(Object)
> of type Object
> Redundant null check at RouterRpcServer.java:[line 1093]|
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