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https://issues.apache.org/jira/browse/HBASE-4634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13133048#comment-13133048
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Ted Yu commented on HBASE-4634:
-------------------------------
TestHFileBlock#testBlockHeapSize is fixed by addendum to HBASE-4219
Please refresh your workspace.
> "test.build.data" property overused leading to write data at the wrong place
> ----------------------------------------------------------------------------
>
> Key: HBASE-4634
> URL: https://issues.apache.org/jira/browse/HBASE-4634
> Project: HBase
> Issue Type: Bug
> Components: test
> Affects Versions: 0.92.0
> Environment: all
> Reporter: nkeywal
> Assignee: nkeywal
> Attachments: 2011020_4634_all.patch,
> 20111020_4639_TestStoreFile.patch, 20111021_4634_all.v2.patch
>
>
> "test.build.data" is overloaded in HBase.At the beginning, it's the "Default
> parent directory for test output.", but then it's rewritten to be the
> directory itself in functions like HBaseTestingUtility#startMiniDFSCluster
> It seems that this value is already used by MiniDFS (i.e. outside of HBase):
> "Name is as it is because mini dfs has hard-codings to put test data here."
> As it is today, there is at least a bug in HBaseTestingUtility:
> {noformat}
> public void initTestDir() {
> if (System.getProperty(TEST_DIRECTORY_KEY) == null) {
> clusterTestBuildDir = setupClusterTestBuildDir();
> System.setProperty(TEST_DIRECTORY_KEY, clusterTestBuildDir.getPath());
> }
> }
> {noformat}
> if you set a value for "test.build.data", the test dir will be the parent
> directory and not a temp subdir, leading to issues as multiple tests will
> end-ups in the same (bad) directory. This function is barely used today,
> hence it's not visible, but I would like to use it in some new code.
> A possible fix is to remove the check for null and continue with the
> overloading, but I don't think it would be a big issue to create a new
> key(like "test.build.data.rootdirectory") specific to the root directory and
> to use "test.build.data" only to communicate with MiniDFS. Feedback welcome.
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