gianm commented on pull request #10267:
URL: https://github.com/apache/druid/pull/10267#issuecomment-738621133
> I didn't see the ClassCastException in the log for the failed batch test
though.
I finally ran this locally and was able to extract the full error. I think
it's happening because `__time` is getting added to the dimensions list of an
input row. (This makes a string dimension named `__time` get created, which
violates all sorts of assumptions.)
We'll need to prevent that from happening somehow. I'll look into it.
```
Caused by: java.lang.ClassCastException:
org.apache.druid.segment.incremental.IncrementalIndexRowHolder cannot be cast
to org.apache.druid.segment.DimensionSelector
at
org.apache.druid.segment.StringDimensionIndexer.convertUnsortedValuesToSorted(StringDimensionIndexer.java:793)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.incremental.IncrementalIndexRowIterator.lambda$makeRowPointer$0(IncrementalIndexRowIterator.java:78)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
~[?:1.8.0_232]
at java.util.Iterator.forEachRemaining(Iterator.java:116)
~[?:1.8.0_232]
at
java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
~[?:1.8.0_232]
at
java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
~[?:1.8.0_232]
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
~[?:1.8.0_232]
at
java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:546)
~[?:1.8.0_232]
at
java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
~[?:1.8.0_232]
at
java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:505)
~[?:1.8.0_232]
at
org.apache.druid.segment.incremental.IncrementalIndexRowIterator.makeRowPointer(IncrementalIndexRowIterator.java:80)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.incremental.IncrementalIndexRowIterator.<init>(IncrementalIndexRowIterator.java:54)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.incremental.IncrementalIndexAdapter.getRows(IncrementalIndexAdapter.java:162)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.IndexMergerV9.makeMergedTimeAndDimsIterator(IndexMergerV9.java:1106)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.IndexMergerV9.makeIndexFiles(IndexMergerV9.java:255)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.IndexMergerV9.merge(IndexMergerV9.java:999)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.IndexMergerV9.persist(IndexMergerV9.java:864)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.IndexMergerV9.persist(IndexMergerV9.java:833)
~[druid-processing-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.realtime.appenderator.AppenderatorImpl.persistHydrant(AppenderatorImpl.java:1334)
~[druid-server-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.realtime.appenderator.AppenderatorImpl.access$100(AppenderatorImpl.java:102)
~[druid-server-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
at
org.apache.druid.segment.realtime.appenderator.AppenderatorImpl$2.call(AppenderatorImpl.java:547)
~[druid-server-0.21.0-SNAPSHOT.jar:0.21.0-SNAPSHOT]
```
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