morningman opened a new issue #4759:
URL: https://github.com/apache/incubator-doris/issues/4759
**Describe the bug**
Help command does not return expected help content.
```
mysql> help create table;
Nothing found
Please try to run 'help contents' for a list of all accessible topics
```
And the fe.log shows error:
```
java.lang.IllegalArgumentException: Multiple entries with same key:
BITMAP=org.apache.doris.qe.HelpTopic@17410c07 and
BITMAP=org.apache.doris.qe.HelpTopic@6ee99964
at
com.google.common.collect.ImmutableMap.conflictException(ImmutableMap.java:215)
~[spark-dpp-1.0.0.jar:1.0.0]
at
com.google.common.collect.ImmutableMap.checkNoConflict(ImmutableMap.java:209)
~[spark-dpp-1.0.0.jar:1.0.0]
at
com.google.common.collect.ImmutableSortedMap.fromEntries(ImmutableSortedMap.java:391)
~[spark-dpp-1.0.0.jar:1.0.0]
at
com.google.common.collect.ImmutableSortedMap.access$100(ImmutableSortedMap.java:61)
~[spark-dpp-1.0.0.jar:1.0.0]
at
com.google.common.collect.ImmutableSortedMap$Builder.build(ImmutableSortedMap.java:553)
~[spark-dpp-1.0.0.jar:1.0.0]
at
com.google.common.collect.ImmutableSortedMap$Builder.build(ImmutableSortedMap.java:451)
~[spark-dpp-1.0.0.jar:1.0.0]
at org.apache.doris.qe.HelpModule.build(HelpModule.java:217)
~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.HelpModule.setUpByZip(HelpModule.java:128)
~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.HelpModule.setUpModule(HelpModule.java:268)
~[palo-fe.jar:3.4.0]
at org.apache.doris.qe.QeService.<init>(QeService.java:43)
[palo-fe.jar:3.4.0]
at org.apache.doris.PaloFe.start(PaloFe.java:112) [palo-fe.jar:3.4.0]
at org.apache.doris.PaloFe.main(PaloFe.java:60) [palo-fe.jar:3.4.0]
```
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