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https://issues.apache.org/jira/browse/HDFS-16938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17695362#comment-17695362
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ASF GitHub Bot commented on HDFS-16938:
---------------------------------------
virajjasani commented on PR #5445:
URL: https://github.com/apache/hadoop/pull/5445#issuecomment-1451015537
Another way I am able to repro consistently:
```
diff --git
a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
index e9f424604b4..9b17a126da1 100755
-
> Utility to trigger heartbeat and wait until BP thread queue is fully processed
> ------------------------------------------------------------------------------
>
> Key: HDFS-16938
> URL: https://issues.apache.org/jira/browse/HDFS-16938
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
>
> As a follow-up to HDFS-16935, we should provide utility to trigger heartbeat
> and wait until BP thread queue is fully processed. This would ensure 100%
> consistency w.r.t active namenode being able to receive bad block reports
> from the given datanode. This utility would resolve flakes for the tests that
> rely on namenode's awareness of the reported bad blocks by datanodes.
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