Re: Debugging High I/O Wait

After some more digging, I discovered that during the time that the RS is stuck the kernel message buffer outputted only this message "[1031214.108110] XFS: java(6522) possible memory allocation deadlock size 32944 in kmem_alloc (mode:0x2400240)" From my reading online, the cause of this error

Re: HBase connection refused after random time delays

Looks like your RegionServer process might have died if you can't connect to its RPC port. Did you look in the RegionServer log for any mention of an ERROR or FATAL log message? On 4/4/19 8:20 AM, melank...@synergentl.com wrote: I have installed Hadoop single node http://intellitech.pro/tut

2 weeks remaining for NoSQL Day abstract submission

There are just *two weeks* remaining to submit abstracts for NoSQL Day 2019, in Washington D.C. on May 21st. Abstracts are due April 19th. https://dataworkssummit.com/nosql-day-2019/ Abstracts don't need to be more than a paragraph or two. Please the time sooner than later to submit your abstr

HBase connection refused after random time delays

I have installed Hadoop single node http://intellitech.pro/tutorial-hadoop-first-lab/ and Hbase http://intellitech.pro/hbase-installation-on-ubuntu/ successfully. I am using a Java agent to connect to the Hbase. After a random time period Hbase stop working and the java agent gives following e