Re: HBase high availability status

2010-03-18 Thread tsuna
On Thu, Mar 18, 2010 at 11:25 AM, Maxim Veksler wrote: > What is the present status about HA of the whole system? > Most blogs[1] mention the requirement for external tools to monitor > the Hadoop Job Tacker?, HBase HBaseMaster ? > > [1] http://www.cloudera.com/blog/2009/07/hadoop-ha-configuration

Re: Cannot open filename Exceptions

2010-03-18 Thread Zheng Lv
Hello Stack, I must say thank you, for your patience too. I'm sorry for that you had tried for many times but the logs you got were not that usful. Now I have turn the logging to debug level, so if we get these exceptions again, I will send you debug logs. Anyway, I still upload the logs you wa

Re: Cannot open filename Exceptions

2010-03-18 Thread Stack
Yeah, I had to retry a couple of times ("Too busy; try back later -- or sign up premium service!"). It would have been nice to have wider log snippets. I'd like to have seen if the issue was double assignment. The master log snippet only shows the split. Regionserver 209's log is the one where

Re: [Indexed HBase] Can I add index in an existing table?

2010-03-18 Thread Vukasin Toroman
cool, I'll update the schema in the morning. stay tuned for results. thx a lot, vukasin On Mar 18, 2010, at 22:23 , Dan Washusen wrote: > Interesting... it looks like it's because you are using the CHAR_ARRAY index > type but the data is not in the expected format. All the index types expec

Re: [Indexed HBase] Can I add index in an existing table?

2010-03-18 Thread Dan Washusen
Interesting... it looks like it's because you are using the CHAR_ARRAY index type but the data is not in the expected format. All the index types expect that the data in the cells has been generated using the org.apache.hadoop.hbase.util.Bytes#toBytes methods. The CHAR_ARRAY type expects that the

HBase high availability status

2010-03-18 Thread Maxim Veksler
Hi everyone, We've evaluating the (very cool) plethora of new noSQL solutions, just to name a few: Cassandra, Hive, SimpleDB, Voldemort, Hypertable and of course HBase. I'm wondering about the current status of HBase / Hadoop: How is HBQL? Do you have good experience with it? Any rough edges onl

Re: hbase misc questions

2010-03-18 Thread Stack
On Thu, Mar 18, 2010 at 8:33 AM, Asif Jan wrote: > Hello > > Is there any information (post/wiki page)  on how data locality works in > hbase. From the documentation in the site I was able to spot following > paragraph in the "Old Road Maps"  section at url >  http://wiki.apache.org/hadoop/HBase/R

Re: Adding filter to scan at remote client causes UnknownScannerException

2010-03-18 Thread Jean-Daniel Cryans
Alex, Is there anything else in the region server logs before that like lease expirations? Can we see a much bigger log? Also is there anything in the .out file? Can you post a snippet of the code you are using? Thx J-D On Wed, Mar 17, 2010 at 11:25 PM, Alex Baranov wrote: > To give more clari

hbase misc questions

2010-03-18 Thread Asif Jan
Hello Is there any information (post/wiki page) on how data locality works in hbase. From the documentation in the site I was able to spot following paragraph in the "Old Road Maps" section at url http://wiki.apache.org/hadoop/HBase/RoadMaps Data-Locality Awareness The Hadoop map reduce

Re: org.apache.hadoop.hbase.UnknownScannerException: Name: -1

2010-03-18 Thread Slava Gorelik
Hi. I also don't have any solution yet. Best Regards. On Thu, Mar 18, 2010 at 8:29 AM, Alex Baranov wrote: > I have a similar problem, but even with standard filter, when I use it on > the remote client ( > > http://old.nabble.com/Adding-filter-to-scan-at-remote-client-causes-UnknownScannerExc

Re: [Indexed HBase] Can I add index in an existing table?

2010-03-18 Thread Vukasin Toroman
Hi Dan, the logs are mostly filled with compaction messages (and are fairly large) so I made a small list of "highlights" here is the regionserver error I keep seeing: http://pastebin.com/xiFza45B It keeps repeating on each regionserver in a "round-robin" fashion as you will see in the m