Oh, sounds like you are running 0.19.x still? If so, as per J-D, you need to upgrade before we can effectively help (IIRC, the dinosaurs roamed the earth when 0.19.x hbase was current). St.Ack
On Tue, Jul 13, 2010 at 6:25 AM, Stack <[email protected]> wrote: > We need more context to help (software versions, numbers of servers > and type, etc.). > > For sure you've read and have implemented all in the requirements > section here: > http://hbase.apache.org/docs/r0.20.5/api/overview-summary.html#overview_description? > In particular the ulimit and xceiver stuff? > > Are you swapping? > > Thanks, > St.Ack > > On Tue, Jul 13, 2010 at 5:43 AM, Yabo Xu <[email protected]> wrote: >> Hi all: >> >> We applied hadoop/hbase for NLP analysis and intermediate data storage, and >> encountered a string of problems when the data scale is up. >> >> Attached is a region server log that shows how it crashed after running a >> mapreduce task with intensive read/writes. >> >> The FATAL error seems to occur at the following line: >> >> "2010-07-13 18:02:56,723 FATAL >> org.apache.hadoop.hbase.regionserver.MemcacheFlusher: Replay of hlog >> required. Forcing server shutdown" >> >> But before this, there are many warning or errors on reading/creating new >> blocks. >> >> We have been struggling on this for a while, but could not identify how to >> fix the problem. Wonder if anybody can help us take a look at the log and >> check out the problem? >> Thanks in advance. >> >> >> >> Best, >> Arber >> >> >> >> >> >> >> >
