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Posted to yarn-issues@hadoop.apache.org by "Rohith Sharma K S (Jira)" <ji...@apache.org> on 2019/09/05 10:13:00 UTC
[jira] [Updated] (YARN-3841) [Storage implementation] Adding retry
semantics to HDFS backing storage
[ https://issues.apache.org/jira/browse/YARN-3841?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rohith Sharma K S updated YARN-3841:
------------------------------------
Fix Version/s: 3.2.1
> [Storage implementation] Adding retry semantics to HDFS backing storage
> -----------------------------------------------------------------------
>
> Key: YARN-3841
> URL: https://issues.apache.org/jira/browse/YARN-3841
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Reporter: Tsuyoshi Ozawa
> Assignee: Abhishek Modi
> Priority: Major
> Labels: YARN-5355, atsv2
> Fix For: 3.3.0, 3.2.1
>
> Attachments: YARN-3841-YARN-7055.002.patch, YARN-3841.001.patch, YARN-3841.002.patch, YARN-3841.003.patch, YARN-3841.004.patch, YARN-3841.005.patch, YARN-3841.006.patch, YARN-3841.007.patch, YARN-3841.008.patch, YARN-3841.009.patch
>
>
> HDFS backing storage is useful for following scenarios.
> 1. For Hadoop clusters which don't run HBase.
> 2. For fallback from HBase when HBase cluster is temporary unavailable. Quoting ATS design document of YARN-2928:
> {quote}
> In the case the HBase
> storage is not available, the plugin should buffer the writes temporarily (e.g. HDFS), and flush
> them once the storage comes back online. Reading and writing to hdfs as the the backup storage
> could potentially use the HDFS writer plugin unless the complexity of generalizing the HDFS
> writer plugin for this purpose exceeds the benefits of reusing it here.
> {quote}
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