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https://issues.apache.org/jira/browse/HDFS-10328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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xupeng updated HDFS-10328:
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Description:
For now, hdfs cacheadmin can not set a default replication num for cached
directive in the same cachepool. Each cache directive added in the same cache
pool should set their own replication num individually.
Consider this situation, we add daily hive table into cache pool "hive" .Each
time i should set the same replication num for every table directive in the
same cache pool.
I think we should enable setting a default replication num for a cachepool that
every cache directive in the pool can inherit replication configuration from
the pool. Also cache directive can override replication configuration
explicitly by calling "add & modify directive -replication" command from cli.
was:
For now, hdfs cacheadmin can not set a replication num for cachepool. Each
cache directive added in the cache pool should set their own replication num
individually.
Consider this situation, we add daily hive table into cache pool "hive" .Each
time i should set the same replication num for every table directive in the
same cache pool.
I think we should enable setting a replication num for cachepool that every
cache directive in the pool can inherit replication configuration from the
pool. Also cache directive can override replication configuration explicitly by
calling "add & modify directive -replication" command from cli.
> Add per-cache-pool default replication configuration
> ----------------------------------------------------
>
> Key: HDFS-10328
> URL: https://issues.apache.org/jira/browse/HDFS-10328
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: caching
> Reporter: xupeng
> Assignee: xupeng
> Priority: Minor
> Fix For: 2.3.0
>
> Attachments: HDFS-10328.001.patch
>
>
> For now, hdfs cacheadmin can not set a default replication num for cached
> directive in the same cachepool. Each cache directive added in the same cache
> pool should set their own replication num individually.
> Consider this situation, we add daily hive table into cache pool "hive" .Each
> time i should set the same replication num for every table directive in the
> same cache pool.
> I think we should enable setting a default replication num for a cachepool
> that every cache directive in the pool can inherit replication configuration
> from the pool. Also cache directive can override replication configuration
> explicitly by calling "add & modify directive -replication" command from
> cli.
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