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https://issues.apache.org/jira/browse/HDFS-11031?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mingliang Liu updated HDFS-11031:
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Attachment: HDFS-11031.003.patch
Thanks [~brahmareddy] for your review. The v3 patch addressed all the comments.
Specially,
{quote}
we are starting only one DataNode..?
{quote}
We've started 2 == _repl_ DataNodes in the {{setUp()}} @Before method which
sets up the mini-cluster. This is based on the existing test class. Here we
test the case where one DataNode should behave as expected when one of its disk
fails. To make this clearer, I also added two new assertions like following:
{code}
// bring up one more DataNode
assertEquals(repl, cluster.getDataNodes().size());
cluster.startDataNodes(newConf, 1, false, null, null);
assertEquals(repl + 1, cluster.getDataNodes().size());
{code}
> Add additional unit test for DataNode startup behavior when volumes fail
> ------------------------------------------------------------------------
>
> Key: HDFS-11031
> URL: https://issues.apache.org/jira/browse/HDFS-11031
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, test
> Reporter: Mingliang Liu
> Assignee: Mingliang Liu
> Attachments: HDFS-11031-branch-2.001.patch,
> HDFS-11031-branch-2.002.patch, HDFS-11031.000.patch, HDFS-11031.001.patch,
> HDFS-11031.002.patch, HDFS-11031.003.patch
>
>
> There are several cases to add in {{TestDataNodeVolumeFailure}}:
> - DataNode should not start in case of volumes failure
> - DataNode should not start in case of lacking data dir read/write permission
> - ...
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