HeartSaVioR edited a comment on issue #23757: [SPARK-23408][SS][BRANCH-2.3] 
Synchronize successive AddData actions in Streaming*JoinSuite
URL: https://github.com/apache/spark/pull/23757#issuecomment-462472158
 
 
   > This is a straight back-port of 
https://github.com/apache/spark/pull/20650/files?w=1 , and indeed it looks like 
the same change we see here with 
https://github.com/apache/spark/pull/23757/files?w=1 , OK. It can be merged 
first without other changes, pending tests?
   
   Yes (and you can also resolve SPARK-24211). And then SPARK-23491 and 
SPARK-23416 can be cherry-picked from origin PRs since they're clean 
cherry-pick and we already ran tests in this PR before revising.(and you can 
also resolve SPARK-24239)
   
   > Maybe someone can help me understand this. The diff at
   > https://github.com/apache/spark/pull/23757/files?w=1
   > looks pretty different from
   > https://github.com/apache/spark/pull/23757/files
   
   It is just same as what #20650 was. You could check the difference between 
https://github.com/apache/spark/pull/23757/files?w=1 vs 
https://github.com/apache/spark/pull/23757/files
   
   The code change add indentation(s) to huge code block: `w=1` option ignores 
differences of indentation(s) whereas no option takes them all diff. You could 
find the difference from searching `logInfo(s"Processing test stream action: 
$action")` from PR with and without option.
   
   BTW, after fixing this I'm seeing very high change of failures from 
FileBasedDataSourceSuite - as I commented earlier it might need ORC version 
upgrade to fix some of related issues, so while we seemed to upgrade the ORC 
dependency from bugfix version (2.4.0 -> 2.4.1) I'm not sure we could do in 2.3 
version line.
   cc. @dongjoon-hyun Could you help explaining how we dealt with 
FileBasedDataSourceSuite and relevant test failures? I'm not sure I understand 
all of changes.

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