GitHub user StephanEwen opened a pull request:
https://github.com/apache/flink/pull/2544
[FLINK-4218] [checkpoints] Do not rely on FileSystem to determine state
sizes
This prevents failures on eventually consistent S3, where the operations
for keys (=entries in the parent directory/bucket) are not guaranteed to be
immediately consistent (visible) after a blob was written.
Not relying on any operation on keys (= requesting `FileStatus`) should
mitigate the problem.
This also changes the exception signature from `getStateSize()` from
`Exception` to `IOException`, which fits more natural with the exception
signatures of some other I/O methods.
Related issue: We may still want to have retries on `FileStatus` operations
on S3, for other parts of the system (like FileOutputFormats)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StephanEwen/incubator-flink state_size_fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2544.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2544
----
commit 7ce2de7e14b9a1fb24c27dc674f689f08abdf7cc
Author: Stephan Ewen <[email protected]>
Date: 2016-09-23T13:16:27Z
[FLINK-4218] [checkpoints] Do not rely on FileSystem to determing state
sizes
This prevents failures on eventually consistent S3, where the operations for
keys (=entries in the parent directory/bucket) are not guaranteed to be
immediately
consistent (visible) after a blob was written.
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