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https://issues.apache.org/jira/browse/HDFS-15147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17045639#comment-17045639
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Hudson commented on HDFS-15147:
-------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17997 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17997/])
HDFS-15147. LazyPersistTestCase wait logic is flawed. Contributed by (kihwal:
rev 352a4ec16de7c39b13ea750600dfc9cc6915cb62)
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* (edit)
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestLazyPersistFiles.java
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ThreadUtil.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestLazyPersistReplicaPlacement.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/LazyPersistTestCase.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestLazyWriter.java
* (edit)
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
> LazyPersistTestCase wait logic is error pruned
> ----------------------------------------------
>
> Key: HDFS-15147
> URL: https://issues.apache.org/jira/browse/HDFS-15147
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Minor
> Attachments: HDFS-15147-branch-2.10.001.patch, HDFS-15147.001.patch,
> HDFS-15147.002.patch, HDFS-15147.003.patch
>
>
> {{LazyPersistTestCase}} has some issues hat lead to inconsistent result of
> the test cases:
> * the wait periods to change of status is too long. It reaches 10 secs in
> some cases.
> * triggerBlockReport() only triggers FBR of DN with index 0. This is counter
> intuitive because the JUnit tests restart the DN assuming that the restarted
> DN will send a FBR. However, this never happens because the DN will get a new
> index post restart.
> {code:java}
> protected final void triggerBlockReport()
> throws IOException, InterruptedException {
> // Trigger block report to NN
> DataNodeTestUtils.triggerBlockReport(cluster.getDataNodes().get(0));
> Thread.sleep(10 * 1000);
> }
> {code}
> [~inigoiri] suggested that we propagate the findings and fixes from
> HDFS-13179 and HDFS-15144 into {{LazyPersistTestCase.java}}. This will
> eventually reduce the runtime and make the test cases more stable.
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