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Posted to dev@hbase.apache.org by "Ben Maurer (JIRA)" <ji...@apache.org> on 2009/01/23 04:22:59 UTC
[jira] Created: (HBASE-1149) Dataloss when master and region server
die at same time
Dataloss when master and region server die at same time
-------------------------------------------------------
Key: HBASE-1149
URL: https://issues.apache.org/jira/browse/HBASE-1149
Project: Hadoop HBase
Issue Type: Bug
Affects Versions: 0.19.0
Reporter: Ben Maurer
To reproduce:
1) Run HBase in standalone mode
2)
create 'foo', 'bar'
3) kill -9 the HBase server
4) Restart hbase
The table 'foo' will not exist.
Apparently this problem happens because the master and region servers die at the same time. To me that suggests a fairly large flaw -- if your cluster has a systematic failure (say, a power outage) it would cause data loss.
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[jira] Commented: (HBASE-1149) Dataloss when master and region
server die at same time
Posted by "stack (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HBASE-1149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12666655#action_12666655 ]
stack commented on HBASE-1149:
------------------------------
Yeah, known issue particular acute in standalone mode where master and regionserver run in same process. HADOOP-4379 means we lose edits still until 0.19.1 hopefully. Also, HBASE-698 makes it so we don't recover if master is killed (this functionality is currently being worked on as part of the zookeeper integration and should be added or hbase 0.20.0).
> Dataloss when master and region server die at same time
> -------------------------------------------------------
>
> Key: HBASE-1149
> URL: https://issues.apache.org/jira/browse/HBASE-1149
> Project: Hadoop HBase
> Issue Type: Bug
> Affects Versions: 0.19.0
> Reporter: Ben Maurer
>
> To reproduce:
> 1) Run HBase in standalone mode
> 2)
> create 'foo', 'bar'
> 3) kill -9 the HBase server
> 4) Restart hbase
> The table 'foo' will not exist.
> Apparently this problem happens because the master and region servers die at the same time. To me that suggests a fairly large flaw -- if your cluster has a systematic failure (say, a power outage) it would cause data loss.
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