hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Paul Ambrose <pambr...@mac.com>
Subject Re: Couple of HBase related issues...
Date Tue, 13 Apr 2010 00:00:56 GMT
Hi,

That definitely sounds like an hbql problem.
I will have a look.

Paul

On Apr 12, 2010, at 3:59 PM, Something Something wrote:

> Sounds like #1 is not HBase issue, but HBql issue.
> 
> http://www.hbql.com/xref/org/apache/hadoop/hbase/hbql/impl/MappingManager.html
> 
> May be this method should be synchronized:
> 
> *public* *void* validatePersistentMetadata() *throws* HBqlException {
> 
> 
> On Mon, Apr 12, 2010 at 2:20 PM, Something Something <
> mailinglists19@gmail.com> wrote:
> 
>> I run into the following two issues related to HBase all the time, and
>> therefore am wondering if there are any permanent fixes for these:
>> 
>> 1) When I start Hadoop & HBase for the first time, and run a single job it
>> runs successfully; but when I fire 2 (or more) jobs only one of them runs
>> successfully and the other one fails with exception saying... "table
>> system_mappings" doesn't exist.  Seems like some type of race condition.
>> How do I bring up HBase with 'system_mappings' table already built?  Or, how
>> do I avoid running into this issue?
>> 
>> 2) After 30 minutes or so on in-activity, HBase (or may be Zookeeper) stops
>> working.  I have to restart it.  How do I ensure that it always stays up?
>> 
>> Thanks for the help.
>> 
>> 


Mime
View raw message