[jira] [Created] (HDDS-3479) Use SCMMetadataStore instead of low level DBStore

["Marton Elek (Jira)" <ji...@apache.org>]

Marton Elek created HDDS-3479:
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             Summary: Use SCMMetadataStore instead of low level DBStore
                 Key: HDDS-3479
                 URL: https://issues.apache.org/jira/browse/HDDS-3479
             Project: Hadoop Distributed Data Store
          Issue Type: Improvement
            Reporter: Marton Elek


Suggested by Nanda in https://github.com/apache/hadoop-ozone/pull/700

Context: we have a low-level DBStoreBuilder with separated DB definition (SCMDBDefinition). But as we have a higher level wrapper class (scmMetadataStore) It seems to be more reasonable to use ScmMetadataStore everywhere inside SCM

(Currently It's called SCMMetadataStoreRDBImpl but it's proposed to remove R from the name as it's no more RocksDB specific)

bq. If we are going with renaming and using it, it's better to use SCMMetadataStoreRDBImpl in all the places rather than DBStoreBuilder.createDBStore(conf, new SCMDBDefinition()
bq. 
Instead of this:

{code}
DBStore dbStore = DBStoreBuilder.createDBStore(conf, new SCMDBDefinition());
Table<PipelineID, Pipeline> pipelineTable = SCMDBDefinition.PIPELINES.getTable(dbStore);
dbStore.close();
{code}

we can use this:

{code}
SCMMetadataStore scmMetadataStore = new SCMMetadataStoreRDBImpl(conf);
Table<PipelineID, Pipeline> pipelineTable = scmMetadataStore.getPipelineTable();
scmMetadataStore.close();
{code}



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