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Date: Mon, 22 Jun 2015 12:29:01 +0000 (UTC)
From: "Tsuyoshi Ozawa (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
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 <JIRA.12839530.1434976118967@arcas>
Subject: [jira] [Created] (YARN-3841) [Storage abstraction] Create HDFS
 backing storage implementation for ATS writes
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Tsuyoshi Ozawa created YARN-3841:
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             Summary: [Storage abstraction] Create HDFS backing storage implementation for ATS writes
                 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: Tsuyoshi Ozawa


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. 
{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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