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https://issues.apache.org/jira/browse/HADOOP-14425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16013834#comment-16013834
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Steve Loughran commented on HADOOP-14425:
-----------------------------------------
that's right: authoritative says "we trust DDB to know everything", meaning if
there isn't an entry there, the file doesn't exist. Makes things like
partitioning a lot faster, but at the same time, something we are still
exploring to see how well it works
> Add more s3guard metrics
> ------------------------
>
> Key: HADOOP-14425
> URL: https://issues.apache.org/jira/browse/HADOOP-14425
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Ai Deng
>
> The metrics suggested to add:
> Status:
> S3GUARD_METADATASTORE_ENABLED
> S3GUARD_METADATASTORE_IS_AUTHORITATIVE
> Operations:
> S3GUARD_METADATASTORE_INITIALIZATION
> S3GUARD_METADATASTORE_DELETE_PATH
> S3GUARD_METADATASTORE_DELETE_PATH_LATENCY
> S3GUARD_METADATASTORE_DELETE_SUBTREE_PATCH
> S3GUARD_METADATASTORE_GET_PATH
> S3GUARD_METADATASTORE_GET_PATH_LATENCY
> S3GUARD_METADATASTORE_GET_CHILDREN_PATH
> S3GUARD_METADATASTORE_GET_CHILDREN_PATH_LATENCY
> S3GUARD_METADATASTORE_MOVE_PATH
> S3GUARD_METADATASTORE_PUT_PATH
> S3GUARD_METADATASTORE_PUT_PATH_LATENCY
> S3GUARD_METADATASTORE_CLOSE
> S3GUARD_METADATASTORE_DESTORY
> From S3Guard:
> S3GUARD_METADATASTORE_MERGE_DIRECTORY
> For the failures:
> S3GUARD_METADATASTORE_DELETE_FAILURE
> S3GUARD_METADATASTORE_GET_FAILURE
> S3GUARD_METADATASTORE_PUT_FAILURE
> Etc:
> S3GUARD_METADATASTORE_PUT_RETRY_TIMES
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