Thomas Mueller created OAK-9748:
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Summary: Parallel Merge does not handle download retry correctly
Key: OAK-9748
URL: https://issues.apache.org/jira/browse/OAK-9748
Project: Jackrabbit Oak
Issue Type: Improvement
Components: indexing
Environment: The current way of dealing with download retry is to
build a new FlatFileStore folder each time a retry happens. Merge daemon thread
creates a merge folder under that FlatFileStore folder and dump intermediate
merge progress there.
When there's a download retry, the retried process load all the previously
created FlatFileStore into its progress, however it does not take in the
already merged intermediate files.
The unit test does not run into this issue because only a small number of
intermediate batch merged files are generated and batch merge size by default
is 64 files. So intermediate merge does not happen.
Reporter: Thomas Mueller
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