[GitHub] [incubator-druid] z1q1q7 opened a new issue #7891: Can't export bitmaps

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

z1q1q7 opened a new issue #7891: Can't export bitmaps
URL: https://github.com/apache/incubator-druid/issues/7891
 
 
   use **dump-segment** to dump rows and metadata are ok, but not bitmaps.
   
   
   ### Affected Version
   
   0.14.0
   
   ### Description
   java -classpath "lib/*"  org.apache.druid.cli.Main tools dump-segment --directory `pwd` --out /tmp/out.txt --dump bitmaps
   		ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console.
   		Jun 14, 2019 11:00:21 AM org.hibernate.validator.internal.util.Version <clinit>
   		INFO: HV000001: Hibernate Validator 5.1.3.Final
   		Exception in thread "main" java.lang.RuntimeException: com.fasterxml.jackson.core.JsonGenerationException: Can not write a binary value, expecting field name
   			at com.google.common.base.Throwables.propagate(Throwables.java:160)
   			at org.apache.druid.cli.DumpSegment$3.apply(DumpSegment.java:392)
   			at org.apache.druid.cli.DumpSegment$3.apply(DumpSegment.java:343)
   			at org.apache.druid.cli.DumpSegment.withOutputStream(DumpSegment.java:428)
   			at org.apache.druid.cli.DumpSegment.runBitmaps(DumpSegment.java:341)
   			at org.apache.druid.cli.DumpSegment.run(DumpSegment.java:191)
   			at org.apache.druid.cli.Main.main(Main.java:118)
   
   refer to **dump-segment** doc, column can omit, however, whether i pass column or not, i get **Can not write a binary value, expecting field name**  error.
   

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