This is a 'green' Flogger migration CL. Green CLs are intended to be as
safe as possible and should be easy to review and submit.
No changes should be necessary to the code itself prior to submission,
but small changes to BUILD files may be required.
Changes within files are completely independent of each other, so this CL
can be safely split up for review using tools such as Rosie.
For more information, see []
Base CL: 197826149
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=198560170
Datastore has a non-zero chance of failing on reads. A map-reduce with too many
failures will eventually give up. As a result, any map-reduce that goes over a
large number of datastore entities is almost guaranteed to fail.
Since we expect to have a large number of EppResources, we make sure to wrap
all datastore reads with some retrying mechanism to reduce the number of
transient failures that propagate to Map-Reduce.
This feature already existed for CommitLogManifestReader, we refactor the code to use the same retrying mechanism in EppResource readers.
Also removed the transactNew around the reads because looking at the source - it doesn't actually do anything we need (doesn't retry on any failure other than concurrency failure)
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=190633281
