[ https://issues.apache.org/jira/browse/HDFS-3300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Brandon Li reassigned HDFS-3300:
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Assignee: Brandon Li
> stream the edit segments to NameNode when NameNode starts up
> ------------------------------------------------------------
>
> Key: HDFS-3300
> URL: https://issues.apache.org/jira/browse/HDFS-3300
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ha, name-node
> Reporter: Brandon Li
> Assignee: Brandon Li
>
> Edit logs are saved on Journal daemon. When NameNode starts, it loads the latest image
file and then streams the edit logs from an active Journal daemon.
> Currently we are using http to transfer edit files between two journal daemons/nodes
or between a journal daemon and a NameNode. To get edit file from Journal daemon, the NameNode
has to download it first and then read it from the disk.
> To avoid the slow start-up time, NameNode should be enhance to read the http data stream
and update its in memory name space instead of saving the streamed data on disk first.
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