### What changes were proposed in this pull request? `ShuffleClientImpl` invokes `loadFileGroupInternal` only once when using the reduce partition mode. ### Why are the changes needed? `ShuffleClientImpl` may call `loadFileGroupInternal` multiple times when using reduce partition mode, which is not as expected. This bug was introduced in #2219. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? GA. Closes #2531 from SteNicholas/CELEBORN-1432. Authored-by: SteNicholas <programgeek@163.com> Signed-off-by: mingji <fengmingxiao.fmx@alibaba-inc.com> |
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