Elek, Marton created HDDS-363:
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Summary: Faster datanode registration during the first startup
Key: HDDS-363
URL: https://issues.apache.org/jira/browse/HDDS-363
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Components: Ozone Datanode
Reporter: Elek, Marton
Fix For: 0.2.1
During the first startup usually we need to wait about 30 s to find the scm
usable. The datanode registration is a multiple step process (request/response
+ request/response) and we need to wait the next HB to finish the registration.
I propose to use a more higher HB frequency at startup (let's say 2 seconds)
and set the configured HB only at the end of the registration.
It also helps for the first users as it could be less confusing (the datanode
can be seen almost immediately on the UI)
Also it would help a lot for me during the testing (yes, I can decrease the HB
frequency but in that case it's harder the follow the later HBs)
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