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From "Aaron Fabbri (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-15621) s3guard: implement time-based (TTL) expiry for DynamoDB Metadata Store
Date Thu, 19 Jul 2018 22:23:00 GMT
Aaron Fabbri created HADOOP-15621:

             Summary: s3guard: implement time-based (TTL) expiry for DynamoDB Metadata Store
                 Key: HADOOP-15621
                 URL: https://issues.apache.org/jira/browse/HADOOP-15621
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
    Affects Versions: 3.0.0-beta1
            Reporter: Aaron Fabbri
            Assignee: Gabor Bota
             Fix For: 3.2.0

LocalMetadataStore is primarily a reference implementation for testing.  It may be useful
in narrow circumstances where the workload can tolerate short-term lack of inter-node consistency:
 Being in-memory, one JVM/node's LocalMetadataStore will not see another node's changes to
the underlying filesystem.

To put a bound on the time during which this inconsistency may occur, we should implement
time-based (a.k.a. Time To Live / TTL)  expiration for LocalMetadataStore

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