Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/3525
@WangTaoTheTonic I have debugged a bit further in this issue, and it seems
there is a bit more to do.
For non-HA blob servers, the atomic rename fix would do it.
For HA cases, we need to do a bit more. A recent change was that the blob
cache will try and fetch blobs directly from the blob store, which may cause
pre-mature reads before the blob has been fully written. Because the storage
systems we target for HA do not all support atomic renames (S3 does not), we
need to use the `_SUCCESS` file trick to mark completed blobs.
I chatted with @tillrohrmann about that, he agreed to take a look at fixing
these and will make an effort to get this into the 1.3 release. Hope that this
will work for you.
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