cuijianwei created HBASE-11626:
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Summary: Region will be closed if user try to move it to an error
destination server
Key: HBASE-11626
URL: https://issues.apache.org/jira/browse/HBASE-11626
Project: HBase
Issue Type: Improvement
Components: master
Affects Versions: 0.98.4
Reporter: cuijianwei
Priority: Minor
When moving region to a destination server by hbase shell command, such as:
{code}
move '7dbe79eb3a77df085c8546b2ee540e7f', 'localhost,58220,1406806842691'
{code}
user could pass an error destination server name, such as misspellings the
server name. Then, HMaster will close the region firstly and then assign the
region to a random server when finding the destination server is not online,
and the region can not serve before it is online again. Do we need to check the
destination server name corresponds to an online server before closing
region?(in HMaster.move(...))
{code}
...
if (destServerName == null || destServerName.length == 0) {
....
} else {
dest = ServerName.valueOf(Bytes.toString(destServerName));
if (dest.equals(regionState.getServerName())) {
...
}
// ### check the destination sever is online before closing region ###
}
...
{code}
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