Puts failing with WrongRegionException

Hi there, Wonder if anyone has seen error like this 2014-10-03 16:03:45,203 WARN [RpcServer.handler=7,port=60020] regionserver.HRegion: Failed getting lock in batch put, row=65317d52abfedc8b94a19f6fbffe187c org.apache.hadoop.hbase.regionserver.WrongRegionException: Requested row out of range

Region Server on all data node?

Hi there, To get good read performance, should the region server be installed on every data node? (Thinking about data locality here) thanks thomas

Re: Region Server on all data node?

#regions.arch.locality Cheers On Fri, Sep 26, 2014 at 7:02 AM, Thomas Kwan thomas.k...@manage.com wrote: Hi there, To get good read performance, should the region server be installed on every data node? (Thinking about data locality here) thanks thomas

random reads

Hi there I have a use-case where I need to do a read to check if a hbase entry is present, then I do a put to create the entry when it is not there. I have a script to get a list of rowkeys from hive and put them on a HDFS directory. Then I have a MR job that reads the rowkeys and do batch

Re: random reads

of threads or tasks, size of the row, RS resources, configurations, etc. so any additional info would be very helpful. cheers, esteban. -- Cloudera, Inc. On Thu, Aug 14, 2014 at 10:32 AM, Thomas Kwan thomas.k...@manage.com wrote: Hi there I have a use-case where I need to do

Cannot drop table

I just created a new test table today, and when trying to drop it, I got ERROR: No serverName in hbase:meta for p_hashes,,1407880525015.6fe0bbb6e5a6f614891e7c1c5901c70f. containing In the hbase master log, it said client.HConnectionManager$HConnectionImplementation: locateRegionInMeta failed;

Read operations hanged

And I have a program that do some read operations and it hangs. And I am seeing 2014-08-10 12:22:05,359 DEBUG [main] client.HConnectionManager$HConnectionImplementation: Removed all cached region locations that map to dn29.manage.com,60020,1407600154728 2014-08-10 12:22:06,173 DEBUG [main]

Re: Read operations hanged

version are you using ? Cheers On Sun, Aug 10, 2014 at 10:27 AM, Thomas Kwan thomas.k...@manage.com wrote: And I have a program that do some read operations and it hangs. And I am seeing 2014-08-10 12:22:05,359 DEBUG [main] client.HConnectionManager$HConnectionImplementation: Removed all

Re: Read operations hanged

,2fd811c2b1d7476efb16499ccb2b823d' went offline ? Thanks On Sun, Aug 10, 2014 at 12:13 PM, Thomas Kwan thomas.k...@manage.com wrote: Hi Ted, Hbase version is 0.96.0.2.0 Nothing interesting in the hbase log on dn29 and confirmed that region server is running on dn29 When I do 'get', i see hbase(main):001:0 get

Hbase MR Job with 2 OutputForm classes possible?

Hi there, I have a Hbase MR job that reads data from HDFS, do a Hbase Get, and then do some data transformation. Then I need to put the data back to Hbase as well as write data to a HDFS file directory (so I can import it back into Hive). The current job creation logic is similar to the

Get operation slows in MR job

Hi there, I have a MR job that does Get and then Put operation to a Hbase table. For the write operation, I am using TableOutputFormat (like to the map function in https://github.com/larsgeorge/hbase-book/blob/master/ch07/src/main/java/mapreduce/ImportFromFile.java ). The write is pretty fast,