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Posted to issues@hbase.apache.org by "puleya7 (JIRA)" <ji...@apache.org> on 2019/04/30 09:33:00 UTC

[jira] [Updated] (HBASE-22339) BC capacity is not limited to 32TB

     [ https://issues.apache.org/jira/browse/HBASE-22339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

puleya7 updated HBASE-22339:
----------------------------
    Attachment: HBASE-22339.patch

> BC capacity is not limited to 32TB
> ----------------------------------
>
>                 Key: HBASE-22339
>                 URL: https://issues.apache.org/jira/browse/HBASE-22339
>             Project: HBase
>          Issue Type: Improvement
>          Components: BucketCache
>            Reporter: puleya7
>            Priority: Minor
>         Attachments: HBASE-22339.patch
>
>
>  
> {code:java}
> BucketCache#constructor()：
> long blockNumCapacity = capacity / blockSize;
> if (blockNumCapacity >= Integer.MAX_VALUE) {
>   // Enough for about 32TB of cache!
>   throw new IllegalArgumentException("Cache capacity is too large, only support 32TB now");
> }
> {code}
>  
> default blockSize is 64*1024
> blockNumCapacity >= Integer.MAX_VALUE means capacity >= 127.99TB, not 32TB



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