wangningito created KUDU-3214:
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Summary: Parallelize DownloadWAL in tablet copy operations
Key: KUDU-3214
URL: https://issues.apache.org/jira/browse/KUDU-3214
Project: Kudu
Issue Type: New Feature
Components: consensus, tablet
Reporter: wangningito
Assignee: wangningito
When downloading tablet data via tablet copy operation, it is necessary to
download blocks data and wal data.
In [KUDU-1728|https://issues.apache.org/jira/browse/KUDU-1728] the
DownloadBlocks were parallelized.
However, to intuition, it may make senses to make DownloadWALs parallelized as
well. It requires very strict performance tests and correctness guarantee to
determine whether to have parallelized version DownloadWALs or not.
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