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Ran 07 Oct 2015 10:40PM UTC

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Build # 7324

Build Type

push

travis-ci

Committed by

stuhood

Commit Message

Be more conservative about caching incremental compiles

We like allowing folks to write to a local buildcache to handle cases where they miss the remote cache for some reason, but unfortunately this can allow for caching of bugs in incremental compilation, which can get pretty sticky. To bias toward correctness, this patch adds an option to control whether incremental compiles (defined as having an analysis file present) are written to the cache.

Internally, we will disable incremental compile caching on laptops, but enable it in CI where we guarantee a `clean-all` after every source change.

- Add a flag to be more conservative about caching of incremental compiles
- Skip the cache write when we've hit the cache during a double check

Testing Done:
https://github.com/pantsbuild/pants/pull/2335

Bugs closed: 2335

Reviewed at https://rbcommons.com/s/twitter/r/2940/

Run Details

Jobs

ID	Job ID	Ran
1	7324.1 (CI_FLAGS="-cjlpn 'Various pants self checks'")	07 Oct 2015 10:41PM UTC	Travis Job 7324.1
4	7324.4 (CI_FLAGS="-fkmsrcjlp 'Python contrib tests'")	07 Oct 2015 10:48PM UTC	Travis Job 7324.4
5	7324.5 (CI_FLAGS="-fkmsrjlpn -i 0/6 'Python integration tests for pants - shard 1'")	07 Oct 2015 10:40PM UTC	Travis Job 7324.5
6	7324.6 (CI_FLAGS="-fkmsrjlpn -i 1/6 'Python integration tests for pants - shard 2'")	07 Oct 2015 10:47PM UTC	Travis Job 7324.6
7	7324.7 (CI_FLAGS="-fkmsrjlpn -i 2/6 'Python integration tests for pants - shard 3'")	07 Oct 2015 10:50PM UTC	Travis Job 7324.7
8	7324.8 (CI_FLAGS="-fkmsrjlpn -i 3/6 'Python integration tests for pants - shard 4'")	07 Oct 2015 10:47PM UTC	Travis Job 7324.8
9	7324.9 (CI_FLAGS="-fkmsrjlpn -i 4/6 'Python integration tests for pants - shard 5'")	07 Oct 2015 10:53PM UTC	Travis Job 7324.9
10	7324.10 (CI_FLAGS="-fkmsrjlpn -i 5/6 'Python integration tests for pants - shard 6'")	07 Oct 2015 10:55PM UTC	Travis Job 7324.10

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