[jira] [Created] (IOTDB-5218) DataNode should marked started successfully until the region is assigned

["Xiangdong Huang (Jira)" <ji...@apache.org>]

Xiangdong Huang created IOTDB-5218:
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             Summary: DataNode should marked started successfully until the region is assigned 
                 Key: IOTDB-5218
                 URL: https://issues.apache.org/jira/browse/IOTDB-5218
             Project: Apache IoTDB
          Issue Type: Bug
    Affects Versions: 1.0.0
            Reporter: Xiangdong Huang


A scenario:
 * start a configNode
 * start a datanode immediatelly
 * write data immediatelly

Then there will be error:

org.apache.iotdb.commons.exception.IoTDBException: ConfigNode failed to extend Region because there are not enough DataNodes

 

Can use the following codes to reproduct:
{code:java}

IoTDBService service = IoTDBService.getInstance();
service.startConfigNodeService();
IoTDBService.getInstance().startDataNodeService();
long time = System.currentTimeMillis();
IoTDBService.getInstance().insertRecord("root.test.d1", time,
    Collections.singletonList("s1"), Collections.singletonList("1.0")); {code}
IoTDBService is a wrapper to wrap CongfigNode's main() and DataNode's main().

 

IMO, the datanode server is really ready only when there is a region for it.

Besides, if the process is time consuming, we can add a status check method to check whether datanode is ready.



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