Sumit Mohanty created AMBARI-4441:
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Summary: Add support for hbase decommisison
Key: AMBARI-4441
URL: https://issues.apache.org/jira/browse/AMBARI-4441
Project: Ambari
Issue Type: Bug
Components: controller
Affects Versions: 1.5.0
Reporter: Sumit Mohanty
Assignee: Sumit Mohanty
Fix For: 1.5.0
Add the API support for hbase decommission. The API calls are:
HBase decommission is different than the other decommissions. The decommission
is actually a graceful stop of the RS allowing to move all the regions. This
involves three steps from the perspective of API calls.
* Mark the RS to be draining and start moving the regions out
* Stop the RS
* Get the RS out of draining mode
{noformat}
1. curl -u admin:admin -H "X-Requested-By: ambari" -X POST -d
'{"RequestInfo":{"context":"Decommission
DataNode","command":"DECOMMISSION","service_name":"HBASE",
"component_name":"HBASE_MASTER",
"parameters":{"slave_type":"HBASE_REGIONSERVER",
"excluded_hosts":"c6401.ambari.apache.org,c6403.ambari.apache.org"}}}'
http://localhost:8080/api/v1/clusters/c1/requests
2. A call to STOP the region server being decommissioned
3. curl -u admin:admin -H "X-Requested-By: ambari" -X POST -d
'{"RequestInfo":{"context":"Decommission
DataNode","command":"DECOMMISSION","service_name":"HBASE",
"component_name":"HBASE_MASTER",
"parameters":{"slave_type":"HBASE_REGIONSERVER",
"excluded_hosts":"c6401.ambari.apache.org,c6403.ambari.apache.org",
"mark_draining_only":"true"}}}'
http://localhost:8080/api/v1/clusters/c1/requests
{noformat}
These calls should be batched so that the order is maintained and if one call
fails then the other calls can also fail. The tolerance for this batch should
be 0.
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