[zebra] leading '_' in directory/file names should be ignored; the "pigtest"
build target should include all pig-related zebra tests.
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Key: PIG-1664
URL: https://issues.apache.org/jira/browse/PIG-1664
Project: Pig
Issue Type: Bug
Affects Versions: 0.7.0, 0.6.0
Reporter: Yan Zhou
Assignee: Yan Zhou
Priority: Trivial
Fix For: 0.8.0
Disk entries of names prefixed with '_' is excluded during split generation,
and should be excluded from CG's data file processing too. Furthermore,
FileInputFormat treats those files as hidden files. Zebra should ignore them to
be safe.
At writing, zebra creates _temporary directory under the table (PIG-1115). The
directory may not be totally cleaned up due to lagging speculative executions.
To avoid any confusions resulting from attempt to access the _temporary
directory, the disk entries of names with the '_' prefix should also be
excluded by Zebra processing.
On the other hand, now that Zebra's pig tests run much faster using PIG's local
mode, all pig-related should be included in the "pigtest" target to complete
PIG's test coverage.
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