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https://issues.apache.org/jira/browse/IOTDB-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuan Tian reassigned IOTDB-1016:
--------------------------------
Assignee: XiangweiWei
> overlapped data should be consumed first
> ----------------------------------------
>
> Key: IOTDB-1016
> URL: https://issues.apache.org/jira/browse/IOTDB-1016
> Project: Apache IoTDB
> Issue Type: Bug
> Components: Core/Engine
> Reporter: Jialin Qiao
> Assignee: XiangweiWei
> Priority: Major
> Labels: pull-request-available
>
> I do a test on rel/0.11 branch (RC2) using iotdb-benchmark.
> IoTDB Configurations：MAX_HEAP_SIZE 25G，enable_memory_control
> true，tsfile_size_threshold 1
> Benchmark write configurations: client=10,storage_group=10, device=100,
> sensor=1000, batch_size=100, loop=10000, overflow_ratio=0.3,
> data_type_proportion=1:1:1:1:1:1
> Benchmark query configurations: QUERY_SENSOR_NUM=1, QUERY_DEVICE_NUM=1
>
> I got an exception when executing group by query:
> 2020-11-17 21:04:39,342 [pool-6-IoTDB-RPC-Client-thread-20] ERROR
> org.apache.iotdb.db.service.TSServiceImpl:741 - IoTDB: Internal server error:
> java.io.IOException: overlapped data should be consumed first
> at
> org.apache.iotdb.db.query.reader.series.SeriesReader.isPageOverlapped(SeriesReader.java:507)
>
> at
> org.apache.iotdb.db.query.reader.series.SeriesAggregateReader.canUseCurrentPageStatistics(SeriesAggregateReader.java:103)
>
> at
> org.apache.iotdb.db.query.dataset.groupby.LocalGroupByExecutor.readAndCalcFromPage(LocalGroupByExecutor.java:300)
>
> at
> org.apache.iotdb.db.query.dataset.groupby.LocalGroupByExecutor.calcResult(LocalGroupByExecutor.java:185)
>
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