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From lars hofhansl <la...@apache.org>
Subject Re: Hbase PrefixFilter Problem
Date Thu, 26 Mar 2015 00:10:17 GMT
Do you have a lot of data? This means the scanner took too long on the server and the client
essentially timed out.

PrefixFilter does not actually skip ahead to the first row in question. You always have to
also set the scanner's startRow to the first row you care about (i.e. the prefix).In your
case also set the startRow to 'Row1'.
-- Lars

      From: Talat Uyarer <talat@uyarer.com>
 To: HBase User <user@hbase.apache.org> 
 Sent: Wednesday, March 25, 2015 1:47 AM
 Subject: Hbase PrefixFilter Problem
Hi all,

I try to use Prefix Filter on hbase shell. It throws an exception. I
do not understand its reason. Could you help me ?

scan 'table1',{FILTER => "PrefixFilter('Row1')", LIMIT => 1}

ERROR: org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException:
Expected nextCallSeq: 1 But the nextCallSeq got from client: 0;
request=scanner_id: 154160 number_of_rows: 100 close_scanner: false
next_call_seq: 0
at org.apache.hadoop.hbase.regionserver.HRegionServer.scan(HRegionServer.java:3198)
at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29925)
at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2031)
at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:108)
at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:116)
at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:96)
at java.lang.Thread.run(Thread.java:745)

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