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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2018/07/24 19:51:01 UTC
[jira] [Updated] (HADOOP-13649) s3guard: implement time-based (TTL)
expiry for LocalMetadataStore
[ https://issues.apache.org/jira/browse/HADOOP-13649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran updated HADOOP-13649:
------------------------------------
Parent: HADOOP-15619 (was: HADOOP-15226)
> 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
> Affects Versions: 3.0.0-beta1
> Reporter: Aaron Fabbri
> Assignee: Gabor Bota
> Priority: Minor
> Fix For: 3.2.0
>
> Attachments: HADOOP-13649.001.patch, HADOOP-13649.002.patch, HADOOP-13649.003.patch
>
>
> 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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