Re: High iowait in idle hbase cluster

Hi Adrien, for the last 24 hours all RS are up and running. There was no region transitions. The overall cluster iowait has decreased, but still 2 RS have very high iowait, while there is no load on the cluster. My assumption with the hight number of HDFS_READ/HDFS_WRITE in RS logs have failed,

Re: High iowait in idle hbase cluster

What is your disk configuration? JBOD? If RAID, possibly a dysfunctional RAID controller, or a constantly-rebuilding array. Do you have any idea at which files are linked the read blocks? On 4 September 2015 at 11:02, Akmal Abbasov wrote: > Hi Adrien, > for the last

Re: HBase master WebUI is not responding

Hi Ted, No, I’ve restarted master node and now there is no exceptions, but still webui is not responding 2015-09-04 14:54:57,926 DEBUG [FifoRpcScheduler.handler1-thread-26] master.AssignmentManager: based on AM, current region=hbase:meta,,1.1588230740 is on server=test-rs3,60020,1441378286999

Performance impact of curl command on linux server

Hi I have been using curl command for ingesting data into HDFS using WebHDFS. Admins are saying that resource utilization for curl is very high which is hampering server performance. I would like to know if curl can use so much of resource which could lead to performance issue. Just to give

Re: HBase master WebUI is not responding

Can you do the following ? run hbck command to see if any inconsistency is reported check region server log on test-rs3 to see if hbase:meta is successfully opened Cheers On Fri, Sep 4, 2015 at 8:20 AM, Akmal Abbasov wrote: > Hi Ted, > > No, I’ve restarted master