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https://issues.apache.org/jira/browse/KYLIN-2622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151477#comment-16151477
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kangkaisen commented on KYLIN-2622:
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The main idea is add a new DictionaryBuilder SegmentAppendTrieDictBuilder,
which build AppendTrieDictionary from empty dict every time in different HDFS
dir, so SegmentAppendTrieDictBuilder needn't lock and support concurrency.
> AppendTrieDictionary support not global
> ---------------------------------------
>
> Key: KYLIN-2622
> URL: https://issues.apache.org/jira/browse/KYLIN-2622
> Project: Kylin
> Issue Type: Improvement
> Components: Metadata
> Affects Versions: v2.0.0
> Reporter: kangkaisen
> Assignee: kangkaisen
>
> Currently, AppendTrieDictionary only support global dict, which means the
> dict will grow continuously. But for the cube doesn't have Partition Date
> Column and the cube doesn't need aggregate query across segments, we could
> build AppendTrieDictionary from empty dict every time.
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