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https://issues.apache.org/jira/browse/IOTDB-1703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yukun Zhou reassigned IOTDB-1703:
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Assignee: Yukun Zhou
> MManager slow recover with tag
> -------------------------------
>
> Key: IOTDB-1703
> URL: https://issues.apache.org/jira/browse/IOTDB-1703
> Project: Apache IoTDB
> Issue Type: Improvement
> Components: Core/Schema Manager
> Reporter: Yukun Zhou
> Assignee: Yukun Zhou
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.13.0, 0.12.3
>
>
> IoTDB support tagIndex in memory for tag based timeseries query.
> Current tagIndex is based on CopyOnWriteArraySet and the time complexity to
> construct each set is O(n2).
> An existing case is that the time for recovering tagIndex for 50000
> timeseries with tags costs 5min or even more, based on working environment.
> We should use a more effective way to construct tagIndex.
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