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https://issues.apache.org/jira/browse/IOTDB-3931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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任宇华 reassigned IOTDB-3931:
--------------------------
Assignee: 任宇华
> Region information is not synchronized between datanode and confignode
> ----------------------------------------------------------------------
>
> Key: IOTDB-3931
> URL: https://issues.apache.org/jira/browse/IOTDB-3931
> Project: Apache IoTDB
> Issue Type: Task
> Components: Core/Cluster
> Reporter: 任宇华
> Assignee: 任宇华
> Priority: Major
>
> 模拟创建一条时间序列，在confignode向datanode发送的过程中，createRegions失败，但是此时confignode中保存了该序列的region信息，导致后续的查询和写入数据会无法进行，并出现以下错误：
> IoTDB> show regions
> +--------+------------+------+-------------+------------+----------+----------+---------+----+
> |RegionId|Type|Status|storage group|Series Slots|Time
> Slots|DataNodeId|Host|Port| |
> +--------+------------+------+-------------+------------+----------+----------+---------+----+
> |14|DataRegion|Up|root.sg|1|1|1|127.0.0.1|6667|
> | 15|SchemaRegion| Up| root.sg| 2| 0| 3|127.0.0.1|6671|
> |15|SchemaRegion|Up|root.ln|1|0|2|127.0.0.1|6669| |
> +--------+------------+------+-------------+------------+----------+----------+---------+----+
> IoTDB> insert into root.sg.wf01.wt01(timestamp,t2)
> values(2017-11-07T23:54:00.000+08:00,24.39)
> Msg: 500: Unexpected errors: cannot fetch schema, status is: 400, msg is:
> Execute FragmentInstance failed: The consensus group SchemaRegion[15] doesn't
> exist
> IoTDB> count timeseries
> Msg: 400: Execute FragmentInstance failed: The consensus group
> SchemaRegion[15] doesn't exist
>
> 1c3d1副本，挂掉datanode1,插入时序测试：
> IoTDB> count timeseries
> Msg: 400: Execute FragmentInstance failed: The consensus group
> SchemaRegion[41] doesn't exist
>
> 1c3d3副本，挂掉datanode1测试：
> IoTDB> create timeseries root.ln.wf02.wt02(t2) with datatype=FLOAT,
> encoding=RLE, compression=SNAPPY tags(tag1=v1, tag2=v2) attributes(attr1=v1,
> attr2=v2)
> Msg: The statement is executed successfully.
> count timeseries
> +-----------------+
> |count(timeseries)|
> +-----------------+
> | 1|
> +-----------------+
> Total line number = 1 It costs 0.052s
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