spark-instrumented-optimizer/core
Xingbo Jiang a03fbfbdd5 [SPARK-31207][CORE] Ensure the total number of blocks to fetch equals to the sum of local/hostLocal/remote blocks
### What changes were proposed in this pull request?

Assert the number of blocks to fetch equals the number of local blocks + the number of hostLocal blocks + the number of remote blocks in ShuffleBlockFetcherIterator. Also refactor the code a bit to make it easier to follow.

### Why are the changes needed?

When the numbers don't match it means something is going wrong, we should fail fast.

### Does this PR introduce any user-facing change?

No. This is basically code refactoring.

### How was this patch tested?

Tested with existing test suites.

Closes #27972 from jiangxb1987/BlockFetcher.

Authored-by: Xingbo Jiang <xingbo.jiang@databricks.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
2020-03-25 13:19:43 +08:00
..
benchmarks [SPARK-29576][CORE] Use Spark's CompressionCodec for Ser/Deser of MapOutputStatus 2019-10-23 18:17:37 -07:00
src [SPARK-31207][CORE] Ensure the total number of blocks to fetch equals to the sum of local/hostLocal/remote blocks 2020-03-25 13:19:43 +08:00
pom.xml [SPARK-30950][BUILD] Setting version to 3.1.0-SNAPSHOT 2020-02-25 19:44:31 -08:00