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https://issues.apache.org/jira/browse/DRILL-7576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17034988#comment-17034988
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ASF GitHub Bot commented on DRILL-7576:
---------------------------------------
paul-rogers commented on pull request #1975: DRILL-7576: Fail fast for operator
errors
URL: https://github.com/apache/drill/pull/1975#discussion_r377999381
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggBatch.java
##########
@@ -340,16 +340,12 @@ public IterOutcome innerNext() {
}
case UPDATE_AGGREGATOR:
- context.getExecutorState().fail(UserException.unsupportedError()
+ throw UserException.unsupportedError()
.message(SchemaChangeException.schemaChanged(
"Hash aggregate does not support schema change",
incomingSchema,
incoming.getSchema()).getMessage())
- .build(logger));
- close();
- killIncoming(false);
- firstBatch = false;
- return IterOutcome.STOP;
+ .build(logger);
Review comment:
We are throwing an exception. In all such cases, the first thing the
fragment executor does is close all the active operators. So, no need for us to
tell upstream that we're failing, or for us to close here. This is, in fact, an
ambiguity that has lead to several bugs when we've closed things twice in a way
that triggers errors.
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> Fail fast in operators
> ----------------------
>
> Key: DRILL-7576
> URL: https://issues.apache.org/jira/browse/DRILL-7576
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.17.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Major
> Fix For: 1.18.0
>
>
> Continues to the work to clean up operators to "fail fast" by throwing an
> exception instead of using the more involved STOP status.
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