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https://issues.apache.org/jira/browse/AMBARI-16278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Yu updated AMBARI-16278:
----------------------------
    Description: 
We have observed extended cluster downtime due to HBase system tables not being 
assigned at cluster start up.

The default values for the following two parameters are too low:

hbase.regionserver.executor.openregion.threads (default: 3)
hbase.master.namespace.init.timeout (default: 300000)

We set hbase.regionserver.executor.openregion.threads=200 and 
hbase.master.namespace.init.timeout=2400000 in some case to work around 
HBASE-14190.


Ambari can use 20 for hbase.regionserver.executor.openregion.threads and 
2400000 for hbase.master.namespace.init.timeout as default value.

  was:
We have observed extended cluster downtime due to HBase system tables not being 
assigned at cluster start up.

The default values for the following two parameters are too low:

hbase.regionserver.executor.openregion.threads (default: 3)
hbase.master.namespace.init.timeout (default: 300000)

We set hbase.regionserver.executor.openregion.threads=200 and 
hbase.master.namespace.init.timeout=2400000 in some case to work around 
HBASE-14190.

Ambari can use 20 for hbase.regionserver.executor.openregion.threads and 
2400000 for hbase.master.namespace.init.timeout as default value.


> Give more time for HBase system tables to be assigned
> -----------------------------------------------------
>
>                 Key: AMBARI-16278
>                 URL: https://issues.apache.org/jira/browse/AMBARI-16278
>             Project: Ambari
>          Issue Type: Improvement
>            Reporter: Ted Yu
>
> We have observed extended cluster downtime due to HBase system tables not 
> being assigned at cluster start up.
> The default values for the following two parameters are too low:
> hbase.regionserver.executor.openregion.threads (default: 3)
> hbase.master.namespace.init.timeout (default: 300000)
> We set hbase.regionserver.executor.openregion.threads=200 and 
> hbase.master.namespace.init.timeout=2400000 in some case to work around 
> HBASE-14190.
> Ambari can use 20 for hbase.regionserver.executor.openregion.threads and 
> 2400000 for hbase.master.namespace.init.timeout as default value.



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