Sergey Soldatov created HBASE-20927:
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Summary: RSGroupAdminEndpoint doesn't handle clearing dead servers
if they are not processed yet.
Key: HBASE-20927
URL: https://issues.apache.org/jira/browse/HBASE-20927
Project: HBase
Issue Type: Bug
Affects Versions: 2.1.0
Reporter: Sergey Soldatov
Assignee: Sergey Soldatov
Fix For: 2.1.1
Admin.clearDeadServers is supposed to return the list of servers that were not
cleared. But if RSGroupAdminEndpoint is set, the ConstraintException is thrown:
{noformat}
Caused by:
org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.constraint.ConstraintException):
org.apache.hadoop.hbase.constraint.ConstraintException: The set of servers to
remove cannot be null or empty.
at
org.apache.hadoop.hbase.rsgroup.RSGroupAdminServer.removeServers(RSGroupAdminServer.java:573)
at
org.apache.hadoop.hbase.rsgroup.RSGroupAdminEndpoint.postClearDeadServers(RSGroupAdminEndpoint.java:519)
at
org.apache.hadoop.hbase.master.MasterCoprocessorHost$133.call(MasterCoprocessorHost.java:1607)
at
org.apache.hadoop.hbase.master.MasterCoprocessorHost$133.call(MasterCoprocessorHost.java:1604)
at
org.apache.hadoop.hbase.coprocessor.CoprocessorHost$ObserverOperationWithoutResult.callObserver(CoprocessorHost.java:540)
at
org.apache.hadoop.hbase.coprocessor.CoprocessorHost.execOperation(CoprocessorHost.java:614)
at
org.apache.hadoop.hbase.master.MasterCoprocessorHost.postClearDeadServers(MasterCoprocessorHost.java:1604)
at
org.apache.hadoop.hbase.master.MasterRpcServices.clearDeadServers(MasterRpcServices.java:2231)
at
org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:409)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:131)
at
org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324)
at
org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)
{noformat}
That happens because in postClearDeadServers it calls
groupAdminServer.removeServers(clearedServer) even if the clearedServer is
empty.
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