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https://issues.apache.org/jira/browse/HADOOP-14125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Mackrory updated HADOOP-14125:
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Attachment: HADOOP-14125-HADOOP-13345.001.patch
Attaching a patch that works with testsThreadCount = cores / 2 on my machine.
I've had failures in ITestS3ACredentialsInURL but I believe that's simply
because DynamoDB can't get the credentials when they're only provided in the S3
URL - surprisingly this doesn't ALWAYS fail, so I'm gonna dig into that deeper
and file a JIRA.
I usually don't run parallel tests because I've always run testsThreadCount =
cores * 2 and had a lot of failures. Currently: Various tests in
ITestBlockingThreadPoolExecutorService ("Blocking call returned too fast") and
various tests in ITestJets3tNativeFileSystemStore (files existing or not
existing when expected, failures and tests that fail vary a lot).
> s3guard tool tests aren't isolated; can't run in parallel
> ---------------------------------------------------------
>
> Key: HADOOP-14125
> URL: https://issues.apache.org/jira/browse/HADOOP-14125
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3, test
> Affects Versions: HADOOP-13345
> Reporter: Steve Loughran
> Assignee: Sean Mackrory
> Attachments: HADOOP-14125-HADOOP-13345.001.patch
>
>
> The {{S3GuardToolTestBase}} don't parallelize and break other tests. This can
> surface if you do a full run with -Ds3guard and -Ddynamo.
> # many of the test paths they create are being requested with absolute paths,
> e.g {{"/test-diff"}}.
> # the base class doesn't set up a per-forked-JUnit-test runner path in the
> bucket
> # and there's no cleanup at the end of each test case; teardown() is empty.
> Ideally, the tests should be made child classes of {{AbstractS3ATestBase}},
> with its post-run cleanup, If that can't be done, then the tests must
> # use {{S3ATestUtils.createTestPath(super.getTestPath())}} to create the base
> test path
> # clean up that dir in teardown if the FS instance is non-null.
> {{ContractTestUtils.cleanup()}} can do this.
> If it happens that the tests cannot run in parallel with others, then the
> build must be changed to exclude them from the parallel test run phase &
> include them in the serialized section.
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