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https://issues.apache.org/jira/browse/IOTDB-5258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haonan Hou reassigned IOTDB-5258:
---------------------------------

    Assignee: Zhijia Cao  (was: Haonan Hou)

> [export tsfile] timeout occurred when the sql return big data
> -------------------------------------------------------------
>
>                 Key: IOTDB-5258
>                 URL: https://issues.apache.org/jira/browse/IOTDB-5258
>             Project: Apache IoTDB
>          Issue Type: Improvement
>            Reporter: changxue
>            Assignee: Zhijia Cao
>            Priority: Major
>
> [export tsfile] timeout occurred when the sql return big data
> root.test.g_0.d_0 has 1000 timeseries and contains 2592000 records.
> actual:
> {code}
> [atmos@i-ra9cbhah tools]$ ./export-tsfile.sh -h iotdb-44 -p 6667 -u root -pw 
> root  -td /data/ -f s_0 -q "select * from root.test.g_0.d_0"
> ------------------------------------------
> Starting IoTDB Client Export Script
> ------------------------------------------
> 9366 [main] WARN  o.a.i.t.c.conf.TSFileDescriptor - not found 
> iotdb-common.properties, use the default configs. 
> 15734 [main] INFO  o.a.iotdb.tsfile.write.TsFileWriter - start close file 
> 16750 [main] INFO  o.a.i.t.write.writer.TsFileIOWriter - Time for flushing 
> metadata is 40 ms 
> Cannot dump result because: 301: FragmentInstance 20221221_031055_00307_1.1.0 
> is aborted by timeout
> {code}
> expect:
> 1. split the sql automatically and make it possible to process
> 2. it could be slowly but could not return error or timeout
> 3. tell the user the process of output, like how many sensors, devices, lines 
> or points have been processed. 
> 4. print the time when the command started and ended.
> 5. print the statistics of processing. e.g. how many output files , how many 
> points etc.



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