Lars,
It is having following errors when I execute the Endpoint RPC client from
eclipse. It seems some of the regions at regionserver
vm-8aa9-fe74.nam.nsroot.net is taking more time to reponse.
Could you guide how to fix it. I don't find any option to set hbase.rpc.timeout
from hbase configuration menu in CDH4 CM server for hbase configuration.
Regards,
Deepak
3/03/12 02:33:12 INFO zookeeper.ClientCnxn: Session establishment complete on
server vm-15c2-3bbf.nam.nsroot.net/10.96.172.44:2181, sessionid =
0x53d591b77090026, negotiated timeout = 60000
Mar 12, 2013 2:33:13 AM org.apache.hadoop.conf.Configuration
warnOnceIfDeprecated
WARNING: hadoop.native.lib is deprecated. Instead, use io.native.lib.available
Mar 12, 2013 2:44:00 AM
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation
processExecs
WARNING: Error executing for row
153299:1362780381523:2932572079500658:vm-ab1f-dd21.nam.nsroot.net:
java.util.concurrent.ExecutionException:
org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after
attempts=10, exceptions:
Tue Mar 12 02:34:15 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2271
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:35:16 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2403
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:36:18 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2465
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:37:20 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2500
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:38:22 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2538
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:39:25 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2572
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:40:30 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2606
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:41:34 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2640
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:42:43 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2677
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:44:00 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2842
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processExecs(HConnectionManager.java:1466)
at org.apache.hadoop.hbase.client.HTable.coprocessorExec(HTable.java:1577)
at org.apache.hadoop.hbase.client.HTable.coprocessorExec(HTable.java:1557)
at
com.citi.sponge.hbase.endpoint.HBaseEndPointClientForElfLog.main(HBaseEndPointClientForElfLog.java:33)
Caused by: org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed
after attempts=10, exceptions:
Tue Mar 12 02:34:15 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2271
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:35:16 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2403
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:36:18 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2465
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:37:20 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2500
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:38:22 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2538
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:39:25 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2572
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:40:30 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2606
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:41:34 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2640
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:42:43 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2677
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:44:00 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2842
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithRetries(HConnectionManager.java:1345)
at
org.apache.hadoop.hbase.ipc.ExecRPCInvoker.invoke(ExecRPCInvoker.java:79)
at $Proxy8.getValues(Unknown Source)
at
com.citi.sponge.hbase.endpoint.HBaseEndPointClientForElfLog$1.call(HBaseEndPointClientForElfLog.java:38)
at
com.citi.sponge.hbase.endpoint.HBaseEndPointClientForElfLog$1.call(HBaseEndPointClientForElfLog.java:1)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$4.call(HConnectionManager.java:1454)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after
attempts=10, exceptions:
Tue Mar 12 02:34:15 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2271
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:35:16 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2403
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:36:18 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2465
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:37:20 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2500
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:38:22 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2538
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:39:25 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2572
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:40:30 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2606
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:41:34 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2640
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:42:43 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2677
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
Tue Mar 12 02:44:00 EDT 2013,
org.apache.hadoop.hbase.ipc.ExecRPCInvoker$1@39443f,
java.net.SocketTimeoutException: Call to
vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020 failed on socket timeout
exception: java.net.SocketTimeoutException: 60000 millis timeout while waiting
for channel to be ready for read. ch :
java.nio.channels.SocketChannel[connected local=/150.110.96.212:2842
remote=vm-8aa9-fe74.nam.nsroot.net/10.42.105.91:60020]
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithRetries(HConnectionManager.java:1345)
at
org.apache.hadoop.hbase.ipc.ExecRPCInvoker.invoke(ExecRPCInvoker.java:79)
at $Proxy8.getValues(Unknown Source)
at
com.citi.sponge.hbase.endpoint.HBaseEndPointClientForElfLog$1.call(HBaseEndPointClientForElfLog.java:38)
at
com.citi.sponge.hbase.endpoint.HBaseEndPointClientForElfLog$1.call(HBaseEndPointClientForElfLog.java:1)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$4.call(HConnectionManager.java:1454)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
From: Kumar, Deepak8 [CCC-OT_IT NE]
Sent: Tuesday, March 12, 2013 2:27 AM
To: '[email protected]'; 'lars hofhansl'
Subject: RE: Regionserver goes down while endpoint execution
Lars,
Thanks for your quick response.There is not much info in region server log. I
am again executing it with DEBUG log level in region servers.
Here is the endpoint code
public class ColumnAggregationEndpoint extends BaseEndpointCoprocessor
implements ColumnAggregationProtocol {
@Override
public List<String> getValues(byte[] family, byte[] qualifier, int
batchSize, int cacheSize)
throws IOException {
// aggregate at each region
Scan scan = new Scan();
scan.addColumn(family, qualifier);
scan.setCaching(cacheSize);
scan.setBatch(batchSize);
List<String> values = new ArrayList<String>();
RegionCoprocessorEnvironment environment =
(RegionCoprocessorEnvironment) getEnvironment();
InternalScanner scanner = environment.getRegion().getScanner(scan);
try {
List<KeyValue> curVals = new ArrayList<KeyValue>();
boolean hasMore = false;
do {
curVals.clear();
hasMore = scanner.next(curVals);
KeyValue kv = curVals.get(0);
values.add(Bytes.toString(kv.getValue()));
} while (hasMore);
} finally {
scanner.close();
}
return values;
}
}
The RPC client to invoke the Endpoint is as follows:
public class HBaseEndPointClientForElfLog {
public static void main(String[] args) {
try {
Configuration conf = HBaseConfiguration.create();
conf.set(
"hbase.zookeeper.quorum",
"vm-ab1f-dd21.nam.nsroot.net,vm-cb03-2277.nam.nsroot.net,vm-15c2-3bbf.nam.nsroot.net");
String tableName = "elf_log";
final String columnFamily = "content";
final String columnQualifier = "logFileName";
final String startRowKey =
"153299:1362780381523:2932572079500658:vm-ab1f-dd21.nam.nsroot.net:";
final String endRowKey = "153299:1362953388000";
HTableInterface table = new HTable(conf, tableName);
Scan scan;
Map<byte[], List<String>> results;
// scan: for all regions
scan = new Scan();
results =
table.coprocessorExec(ColumnAggregationProtocol.class,
startRowKey.getBytes(), endRowKey.getBytes(),
new Batch.Call<ColumnAggregationProtocol,
List<String>>() {
public List<String>
call(ColumnAggregationProtocol instance)
throws IOException {
return
instance.getValues(columnFamily.getBytes(),
columnQualifier.getBytes(),2,5);
}
});
for (Map.Entry<byte[], List<String>> e : results.entrySet()) {
System.out.println("Size of list returned:
"+e.getValue().size());
for(String singleVal: e.getValue()){
System.out.println(singleVal);
}
}
} catch (Throwable throwable) {
throwable.printStackTrace();
}
}
}
Regards,
Deepak
-----Original Message-----
From: lars hofhansl [mailto:[email protected]]
Sent: Tuesday, March 12, 2013 2:01 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: Regionserver goes down while endpoint execution
What does the region server log say?
Endpoints do not run in a sandbox. You can call System.exit(...) and your
RegionServer will happily exit.
If you can, please show us your endpoint code.
-- Lars
________________________________
From: "Kumar, Deepak8 " <[email protected]<mailto:[email protected]>>
To: "'[email protected]'"
<[email protected]<mailto:[email protected]>>
Sent: Monday, March 11, 2013 10:51 PM
Subject: Regionserver goes down while endpoint execution
Hi,
I have a table in hbase which has more than 5GB of data, it is distributed at
101 regions at 5 regionservers.
When I execute an endpoint which is supposed to fetch a column qualifier value
using an endpoint RPC client, the region server goes down. The hbase master log
says "Can't connect to region, retrying.." The same endpoint works fine for
tables which has 300 records.
Could you please guide me the reason for being regionserver down?
Regards,
Deepak
