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Posted to commits@druid.apache.org by GitBox <gi...@apache.org> on 2019/07/11 17:26:41 UTC
[GitHub] [incubator-druid] pjain1 opened a new pull request #8066: write
value of bitmap as field name
pjain1 opened a new pull request #8066: write value of bitmap as field name
URL: https://github.com/apache/incubator-druid/pull/8066
I was trying to dump bitmaps for a segment and got this error -
```
Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: com.fasterxml.jackson.core.JsonGenerationException: Can not start an array, expecting field name
at org.apache.druid.cli.DumpSegment.run(DumpSegment.java:197)
at org.apache.druid.cli.Main.main(Main.java:112)
Caused by: java.lang.RuntimeException: com.fasterxml.jackson.core.JsonGenerationException: Can not start an array, expecting field name
at org.apache.druid.cli.DumpSegment$3.apply(DumpSegment.java:391)
at org.apache.druid.cli.DumpSegment$3.apply(DumpSegment.java:342)
at org.apache.druid.cli.DumpSegment.withOutputStream(DumpSegment.java:427)
at org.apache.druid.cli.DumpSegment.runBitmaps(DumpSegment.java:340)
at org.apache.druid.cli.DumpSegment.run(DumpSegment.java:190)
... 1 more
Caused by: com.fasterxml.jackson.core.JsonGenerationException: Can not start an array, expecting field name
at com.fasterxml.jackson.core.JsonGenerator._reportError(JsonGenerator.java:1649)
at com.fasterxml.jackson.core.json.UTF8JsonGenerator._verifyValueWrite(UTF8JsonGenerator.java:949)
at com.fasterxml.jackson.core.json.UTF8JsonGenerator.writeStartArray(UTF8JsonGenerator.java:282)
at org.apache.druid.cli.DumpSegment$3.apply(DumpSegment.java:367)
... 5 more
```
So the column value for which bitmap will be output was missing so added it. Not sure how was it working before, can anybody try if they are getting the same exception without this fix ?
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