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Posted to common-dev@hadoop.apache.org by "Aaron Fabbri (JIRA)" <ji...@apache.org> on 2016/09/23 20:37:20 UTC

[jira] [Created] (HADOOP-13649) s3guard: implement time-based (TTL) expiry for LocalMetadataStore

Aaron Fabbri created HADOOP-13649:
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             Summary: s3guard: implement time-based (TTL) expiry for LocalMetadataStore
                 Key: HADOOP-13649
                 URL: https://issues.apache.org/jira/browse/HADOOP-13649
             Project: Hadoop Common
          Issue Type: Sub-task
          Components: fs/s3
            Reporter: Aaron Fabbri
            Assignee: Aaron Fabbri


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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