| clear query|facets|time |
Search criteria: .
Results from 41 to 50 from
52 (0.311s).
|
|
|
Loading phrases to help you
refine your search...
|
|
RE: Cannot locate root region - HBase - [mail # dev]
|
|
...@Joy: The info stored in .META. for various regions as well as in the ephem eral nodes for region servers in zookeeper are both already IP address base d. So doesn't look like multi-homing a...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-29, 16:33
|
|
|
RE: scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...1. >>> That's what seems to have happened. For all these problem regions (about 50 out of the 400 odd regions my table had), a scan of .META. shows 5 entries , info:spli...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-27, 22:30
|
|
|
RE: scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...This was on a 2.6.20. Nothing in the /var/log/messages either around that time-- so we may not ha ve hit any system wide limits. Perhaps the DataNode process hit its process limi...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-27, 20:27
|
|
|
RE: scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...Dhruba: yes, the "Too many open files" exception is getting reported by the DN process. The same node is also running an HBase region server. And yes, I confirmed that the xcieve...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-26, 20:58
|
|
|
RE: scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...Some quick answers to the questions. Will follow up later today with more d etails. 1) the test nodes were 8 cpu machines. 2) region server log does report ulimit of 64k. M...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-26, 20:56
|
|
|
RE: scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...Looking further up in the logs (about 20 minutes prior in the logs when err ors first started happening), I noticed the following. btw, ulimit -a shows that I have "open files" set to...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-26, 15:10
|
|
|
RE: scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...1. Yes, it is a 5 node, setup. 1 Name Node/4 Data Nodes. Of the 4 DN, one is running the HBase Master, and the other three are running region servers. ZK is on all the same 5 no...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-26, 15:01
|
|
|
scanner lease expired/region server shutdown - HBase - [mail # dev]
|
|
...I was doing some brute force testing - running one instance of PerformanceE valuation (PE) for writes, and another instance for randomReads. One of the region servers went down after a...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-26, 03:14
|
|
|
RE: commit semantics - HBase - [mail # dev]
|
|
...Yes. Seems like we all generally agree that large number of regions per region s erver may not be the way to go. So coming back to Dhruba's question on having one commit log per...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-12, 21:07
|
|
|
RE: commit semantics - HBase - [mail # dev]
|
|
...Ok cool. Thanks for clarifying. I think what I had in mind was a hybrid-- basically try to accumulate trans actions up to a certain app configurable time window before sync'ing (& unt ...
|
|
|
Author: Kannan Muthukkaruppan,
2010-01-12, 20:10
|
|
|
|
