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Posted to issues@carbondata.apache.org by "Zhichao Zhang (JIRA)" <ji...@apache.org> on 2018/02/17 15:17:00 UTC

[jira] [Updated] (CARBONDATA-2184) Improve memory reuse for heap memory in `HeapMemoryAllocator`

     [ https://issues.apache.org/jira/browse/CARBONDATA-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhichao  Zhang updated CARBONDATA-2184:
---------------------------------------
    Description: 
The description in [SPARK-21860|https://issues.apache.org/jira/browse/SPARK-21860]:
In `HeapMemoryAllocator`, when allocating memory from pool, and the key of pool is memory size.
Actually some size of memory ,such as 1025bytes,1026bytes,......1032bytes, we can think they are the same，because we allocate memory in multiples of 8 bytes.
In this case, we can improve memory reuse.

> Improve memory reuse for heap memory in `HeapMemoryAllocator`
> -------------------------------------------------------------
>
>                 Key: CARBONDATA-2184
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-2184
>             Project: CarbonData
>          Issue Type: Improvement
>          Components: core
>            Reporter: Zhichao  Zhang
>            Assignee: Zhichao  Zhang
>            Priority: Minor
>             Fix For: 1.3.0, 1.4.0
>
>
> The description in [SPARK-21860|https://issues.apache.org/jira/browse/SPARK-21860]:
> In `HeapMemoryAllocator`, when allocating memory from pool, and the key of pool is memory size.
> Actually some size of memory ,such as 1025bytes,1026bytes,......1032bytes, we can think they are the same，because we allocate memory in multiples of 8 bytes.
> In this case, we can improve memory reuse.



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