commit | c0e7ecc89be79919e58e144713579374d05a4ed6 | [log] [tgz] |
---|---|---|
author | Youssef Elghareeb <ghareeb@google.com> | Tue Mar 16 14:01:13 2021 +0100 |
committer | Youssef Elghareeb <ghareeb@google.com> | Wed Mar 17 10:31:34 2021 +0100 |
tree | 51a2d1ff531dce0924b997cd612833586e93c503 | |
parent | 586d48f57e1b6d56c647042327b1e49609705cc1 [diff] |
Add timeout to DiffOperations The odd diff cache - PatchListCache - had a timeout implemented in its PatchListLoader. This change adds the same timeout to DiffOperations - the interface using the new diff cache. PatchListLoader uses the histogram diff algorithm by default, and if it times out, the cache loader falls back to using the algorithm without myers diff, hence doing the computation faster - check [1]. This is done silently with a warning log message. In the new diff cache, the diff algorithm is part of the cache key, and accordingly in this change, the timeout exception is propagated from DiffOperations to callers. It's up to callers to request the diff again with another diff algorithm. The timeout employed by this change is implemented outside the cache, i.e. in DiffOperations. A slight change to the documentation at [2] is to be made in a future change (after fully deploying the new cache) to highlight the new behaviour. [1] https://gerrit.googlesource.com/gerrit/+/ec0f7eae9d6d067e9868d7f9177c6b2f7bcf196d/java/com/google/gerrit/server/patch/filediff/PatchListLoader.java#549 [2] https://gerrit-review.googlesource.com/Documentation/config-gerrit.html#cache.diff.timeout Change-Id: I87d2b01b208db8648648a87d03eeb62e88c81607
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