GitHub user qiuchenjian opened a pull request:
https://github.com/apache/carbondata/pull/3057
[CARBONDATA-3238] Solve StackOverflowError using MV datamap
ãProblemã An exception or error caused a run to abort. ï¼Using MVï¼
java.lang.StackOverflowError
at
org.apache.spark.sql.catalyst.expressions.AttributeMap$$anonfun$get$1.apply(AttributeMap.scala:34)
at
org.apache.spark.sql.catalyst.expressions.AttributeMap$$anonfun$get$1.apply(AttributeMap.scala:34)
at scala.Option.map(Option.scala:146)
at
org.apache.spark.sql.catalyst.expressions.AttributeMap.get(AttributeMap.scala:34)
at
org.apache.spark.sql.catalyst.expressions.AttributeMap.contains(AttributeMap.scala:36)
at
org.apache.carbondata.mv.rewrite.SelectSelectGroupbyChildDelta$$anonfun$13.applyOrElse(DefaultMatchMaker.scala:693)
ãCauseãWhen column of table is lowcase and column of mv is uppercase
and this column is the selected column(detail test case see the code), the tree
node of this selected column in the logic plan tree have will be alias which
has a child of attributeReference, when this code run in the
sel_3q.transformExpressions in DefaultMatchMaker.scala, the executor rule will
cause loop callã
ãSolutionãthis executor rule only need be transformed once by one
experssion, so define a flag to solve it
Be sure to do all of the following checklist to help us incorporate
your contribution quickly and easily:
- [ ] Any interfaces changed?
- [ ] Any backward compatibility impacted?
- [ ] Document update required?
- [ ] Testing done
Please provide details on
- Whether new unit test cases have been added or why no new tests
are required?
- How it is tested? Please attach test report.
- Is it a performance related change? Please attach the performance
test report.
- Any additional information to help reviewers in testing this
change.
- [ ] For large changes, please consider breaking it into sub-tasks under
an umbrella JIRA.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/qiuchenjian/carbondata MVStackException
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/3057.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3057
----
commit 3568ba53299b9f019ea41fc483bb5f79652c5352
Author: qiuchenjian <807169000@...>
Date: 2019-01-09T03:07:41Z
[CARBONDATA-3238] Solve StackOverflowError using MV datamap
----
---
