Changes

Summary

  1. [SPARK-33283][CORE] Remove useless externalBlockStoreSize from RDDInfo (commit: fa63117) (details)
Commit fa6311731be8643f047d2a85faf16e82300883b0 by dhyun
[SPARK-33283][CORE] Remove useless externalBlockStoreSize from RDDInfo
### What changes were proposed in this pull request?
"external block store" API was removed after SPARK-12667,
`externalBlockStoreSize` in `RDDInfo` looks like always 0 and useless.
So this pr just to remove this useless variable.
### Why are the changes needed? remove useless variable.
### Does this PR introduce _any_ user-facing change? No
### How was this patch tested? Pass the Jenkins or GitHub Action
Closes #30179 from LuciferYang/SPARK-12667-FOLLOWUP.
Authored-by: yangjie01 <yangjie01@baidu.com> Signed-off-by: Dongjoon
Hyun <dhyun@apple.com>
(commit: fa63117)
The file was modifiedcore/src/main/scala/org/apache/spark/rdd/RDD.scala (diff)
The file was modifiedcore/src/main/scala/org/apache/spark/storage/BlockManagerMasterEndpoint.scala (diff)
The file was modifiedcore/src/main/scala/org/apache/spark/storage/RDDInfo.scala (diff)