[GitHub] [druid] leerho removed a comment on issue #9736: HLLSketchMerge aggregator failing for some metrics after upgrade to v0.18

[GitBox <gi...@apache.org>]

leerho removed a comment on issue #9736:
URL: https://github.com/apache/druid/issues/9736#issuecomment-618631657


   I tried using the Dump-Segment tool, following the java run command in the documentation, to examine the _hll_segment.zip_ provided by @scrawfor above.
   
   I get a NullPointerException.  I would like to get this working, but I must be doing something wrong. Here is the stack trace:
   
   > $ java -classpath "/Users/lrhodes/dev/git/Apache/druid-0.18.0/apache-druid-0.18.0/lib/*" -Ddruid.extensions.loadList="[]" org.apache.druid.cli.Main  tools dump-segment  --directory /Users/lrhodes/dev/git/Apache/druid-0.18.0/Dump/hll_segment/  --out /Users/lrhodes/dev/git/Apache/druid-0.18.0/Dump/hll_segment.txt
   `ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. Set system property 'org.apache.logging.log4j.simplelog.StatusLogger.level' to TRACE to show Log4j2 internal initialization logging.
   Exception in thread "main" java.lang.RuntimeException: java.lang.NullPointerException
   	at org.apache.druid.cli.DumpSegment.run(DumpSegment.java:196)
   	at org.apache.druid.cli.Main.main(Main.java:113)
   Caused by: java.lang.NullPointerException
   	at org.apache.druid.segment.column.SimpleColumnHolder.getColumn(SimpleColumnHolder.java:68)
   	at org.apache.druid.segment.QueryableIndexColumnSelectorFactory.lambda$getCachedColumn$2(QueryableIndexColumnSelectorFactory.java:175)
   	at java.util.HashMap.computeIfAbsent(HashMap.java:1127)
   	at org.apache.druid.segment.QueryableIndexColumnSelectorFactory.getCachedColumn(QueryableIndexColumnSelectorFactory.java:171)
   	at org.apache.druid.segment.QueryableIndexColumnSelectorFactory.lambda$makeColumnValueSelector$1(QueryableIndexColumnSelectorFactory.java:146)
   	at org.apache.druid.segment.QueryableIndexColumnSelectorFactory.makeColumnValueSelector(QueryableIndexColumnSelectorFactory.java:160)
   	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
   	at java.util.Iterator.forEachRemaining(Iterator.java:116)
   	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
   	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
   	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
   	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
   	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
   	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:566)
   	at org.apache.druid.cli.DumpSegment$2$1.apply(DumpSegment.java:280)
   	at org.apache.druid.cli.DumpSegment$2$1.apply(DumpSegment.java:272)
   	at org.apache.druid.java.util.common.guava.MappingAccumulator.accumulate(MappingAccumulator.java:40)
   	at org.apache.druid.java.util.common.guava.FilteringAccumulator.accumulate(FilteringAccumulator.java:41)
   	at org.apache.druid.java.util.common.guava.MappingAccumulator.accumulate(MappingAccumulator.java:40)
   	at org.apache.druid.java.util.common.guava.BaseSequence.accumulate(BaseSequence.java:44)
   	at org.apache.druid.java.util.common.guava.MappedSequence.accumulate(MappedSequence.java:43)
   	at org.apache.druid.java.util.common.guava.WrappingSequence$1.get(WrappingSequence.java:50)
   	at org.apache.druid.java.util.common.guava.SequenceWrapper.wrap(SequenceWrapper.java:55)
   	at org.apache.druid.java.util.common.guava.WrappingSequence.accumulate(WrappingSequence.java:45)
   	at org.apache.druid.java.util.common.guava.FilteredSequence.accumulate(FilteredSequence.java:45)
   	at org.apache.druid.java.util.common.guava.MappedSequence.accumulate(MappedSequence.java:43)
   	at org.apache.druid.cli.DumpSegment.evaluateSequenceForSideEffects(DumpSegment.java:493)
   	at org.apache.druid.cli.DumpSegment.access$100(DumpSegment.java:103)
   	at org.apache.druid.cli.DumpSegment$2.apply(DumpSegment.java:312)
   	at org.apache.druid.cli.DumpSegment$2.apply(DumpSegment.java:265)
   	at org.apache.druid.cli.DumpSegment.withOutputStream(DumpSegment.java:426)
   	at org.apache.druid.cli.DumpSegment.runDump(DumpSegment.java:263)
   	at org.apache.druid.cli.DumpSegment.run(DumpSegment.java:183)
     ...`


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