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https://reviews.apache.org/r/53695/
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Review request for mesos, Gilbert Song and Jie Yu.


Bugs: MESOS-6587
    https://issues.apache.org/jira/browse/MESOS-6587


Repository: mesos


Description
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Allows caching extractable files when outputFile is set.


Diffs
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  src/launcher/fetcher.cpp 4456c28139966e42859cc6d2c79a1d90e83fb22f 
  src/tests/fetcher_cache_tests.cpp 03e817d46194d451eceb70f4cebb54dfdcb4c2e7 

Diff: https://reviews.apache.org/r/53695/diff/


Testing
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A new test, FetcherCacheTest.LocalCachedExtractCustomOutputFile, was created to 
confirm that when a URI is created with cached: true, extract: true, a custom 
outputFile with a proper compression suffix set, and an original URI that 
doesn't end with a proper compression suffix fails to extract properly from the 
cache.

The test makes a copy of the test archive in the cache but appends "misc" to 
the end, forming an invalid compression suffix, causing 
mesos-fetcher-test-archive.tgz to become mesos-fetcher-test-archive.tgzmisc. 
The URI path is set to this modified location. The outputFile of the URI is set 
ARCHIVE_NAME which ends with a valid compression suffix, so therefore should 
extract properly.

At the end of the test the temporary cached archive file 
(mesos-fetcher-test-archive.tgzmisc) is deleted.

Before the patch was written this test was failing as expected. After 
implementing the patch, this and all other tests were passing.


Thanks,

Stephen Hankinson

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