Elek, Marton created HDFS-13203:
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Summary: Ozone: dozone: auto-bootstrap SCM/KSM in containerized
environment
Key: HDFS-13203
URL: https://issues.apache.org/jira/browse/HDFS-13203
Project: Hadoop HDFS
Issue Type: Sub-task
Components: HDFS-7240
Affects Versions: 3.1.0
Reporter: Elek, Marton
Assignee: Elek, Marton
Currently to start SCM and KSM in a new environment we need to:
1. Initialize scm (/hdfs scm -init)
2. Start scm
3. hdfs ksm -createObjectStore (connects to the scm, scm should be running)
4. Start ksm
The problematic part is step 3.) as in a containerized environment
(docker-compose/kubernetes) the timing couldn't be guaranteed.
I propose to introduce a new command line flag '--auto-bootstrap' for both KSM
and SCM (and maybe for Namenode in the future).
It will:
1. Initilize KSM and SCM *if and only if* the data directories are missing
2. In case of KSM retry the initilization in every 10 seconds (in case of SCM
is not yet running) in case of connection failure
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