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https://issues.apache.org/jira/browse/HDDS-11230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-11230:
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    Labels: pull-request-available  (was: )

> Make RocksDB cache configurable in Ozone Manager
> ------------------------------------------------
>
>                 Key: HDDS-11230
>                 URL: https://issues.apache.org/jira/browse/HDDS-11230
>             Project: Apache Ozone
>          Issue Type: Improvement
>          Components: OM
>            Reporter: Duong
>            Assignee: weiming
>            Priority: Major
>              Labels: pull-request-available
>
> Ozone Manager's performance heavily depends on RocksDB performance. RocksDB 
> cache plays an important role in RocksDB's read performance, especially when 
> a client has to host OM's metadata in not-so-fast hardware. 
> Today, OM RocksDB cache is fixed at 256MB (see DBProfile), this is 
> unreasonable because the cache size should depend on the client use-case, 
> i.e. how big is their active key space. For example, if a client always has 
> 1M of hot keys daily, and each key metadata is 1kb, having a cache size of 
> 1GB makes a lot of sense. 
> Ref:
>  * [https://github.com/facebook/rocksdb/wiki/Block-Cache]
>  * [https://github.com/facebook/rocksdb/wiki/Performance-Benchmarks] 



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