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From alwin james <jamea...@gmail.com>
Subject HBase Lease Exceptions
Date Wed, 04 Oct 2017 18:48:43 GMT
Hi Experts -

I see lot of following messages in my regionserver logs:

2017-09-28 11:09:19,650 INFO  [regionserver/<hostname>.leaseChecker]
regionserver.RSRpcServices: Scanner 420931 lease expired on region
<Table-Details>|.,1484079498922.a9131abae13f8f056fb98275c778cfd9.
2017-09-28 11:09:19,650 INFO  [regionserver/<hostname>.leaseChecker]
regionserver.RSRpcServices: Scanner 420930 lease expired on region
<Table-Details>|.,1484079498922.a9131abae13f8f056fb98275c778cfd9.

What does it mean? What is the impact of the above in my HBase operations?

Also observed the following:
2017-09-28 11:09:20,586 WARN
[B.defaultRpcServer.handler=3,queue=0,port=16020] ipc.RpcServer:
(responseTooSlow):
{"call":"Scan(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ScanRequest)","starttimems":1506611301596,"responsesize":182,"method":"Scan","processingtimems":58990,"client":"<host>:64081","queuetimems":11473,"class":"HRegionServer"}
2017-09-28 11:09:21,305 WARN
[B.defaultRpcServer.handler=28,queue=1,port=16020] ipc.RpcServer:
(responseTooSlow):
{"call":"Scan(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ScanRequest)","starttimems":1506611124846,"responsesize":82,"method":"Scan","processingtimems":236458,"client":"<host2>:49965","queuetimems":20511,"class":"HRegionServer"}

Regionserver is allocated 16GB of memory. We are using HBase 1.1.
Anything specific I should look to understand what is happening? Any help
is much appreciated.

Regards,
Alwin

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