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https://issues.apache.org/jira/browse/IOTDB-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yifu Zhou reassigned IOTDB-1183:
--------------------------------

    Assignee: Yifu Zhou

> Optimize Query Performance in Cluster
> -------------------------------------
>
>                 Key: IOTDB-1183
>                 URL: https://issues.apache.org/jira/browse/IOTDB-1183
>             Project: Apache IoTDB
>          Issue Type: Improvement
>          Components: Cluster
>            Reporter: Yifu Zhou
>            Assignee: Yifu Zhou
>            Priority: Major
>             Fix For: 0.12.0
>
>
> In IoTDB cluster version, query performance is not good enough, especially if 
> we need to read the data from remote nodes. We need to reduce unnecessary 
> operations and improve the query performance in cluster version ASAP.
> 1. ManagedSeriesReader will sync leader for each timeseries. For example, if 
> query select s_1,s_2 from root.to.path where time < 5, it will do 
> syncLeaderWithConsistencyCheck twice.  Actually it only need to do check once 
> for each query. I will fix it.



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