Bharat Viswanadham created HDDS-1262:
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Summary: In OM HA OpenKey call Should happen only leader OM
Key: HDDS-1262
URL: https://issues.apache.org/jira/browse/HDDS-1262
Project: Hadoop Distributed Data Store
Issue Type: Sub-task
Reporter: Bharat Viswanadham
Assignee: Bharat Viswanadham
In OM HA, currently when allocateBlock is called, in applyTransaction() on all
OM nodes, we make a call to SCM and write the allocateBlock information into OM
DB. The problem with this is, every OM allocateBlock and appends new BlockInfo
into OMKeyInfom and also this a correctness issue. (As all OM's should have the
same block information for a key, even though eventually this might be changed
during key commit)
The proposed approach is:
1. Calling SCM for allocation of block will happen outside of ratis, and this
block information is passed and writing to DB will happen via Ratis.
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