Genmao Yu created HADOOP-15038:
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Summary: Abstract {{MetadataStore}} in {{S3Guard}} into a common
module.
Key: HADOOP-15038
URL: https://issues.apache.org/jira/browse/HADOOP-15038
Project: Hadoop Common
Issue Type: New Feature
Components: fs
Affects Versions: 3.0.0-beta1
Reporter: Genmao Yu
Open this JIRA to discuss if we should move {{MetadataStore}} in {{S3Guard}}
into a common module. Based on this work, other filesystem or object store can
implement their own metastore for optimization (known issues like consistency
problem and metadata operation performance). [[email protected]] and other
guys have done many base and great works in {{S3Guard}}. It is very helpful to
start work. I did some perf test in HADOOP-14098, and started related work for
Aliyun OSS. Indeed there are still works to do for {{S3Guard}}, like metadata
cache inconsistent with S3 and so on. It also will be a problem for other
object store. However, we can do these works in parallel.
cc [~drankye]
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