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Date: Sat, 17 Oct 2015 05:20:05 +0000 (UTC)
From: "Lars Hofhansl (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12905430.1444979503000.65137.1445059205348@Atlassian.JIRA>
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Subject: [jira] [Updated] (HBASE-14628) Save object creation for scanning
 with block encodings
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     [ https://issues.apache.org/jira/browse/HBASE-14628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl updated HBASE-14628:
----------------------------------
    Summary: Save object creation for scanning with block encodings  (was: Save object creation for scanning with FAST_DIFF encoding)

> Save object creation for scanning with block encodings
> ------------------------------------------------------
>
>                 Key: HBASE-14628
>                 URL: https://issues.apache.org/jira/browse/HBASE-14628
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>         Attachments: 14628-0.98.txt
>
>
> I noticed that (at least in 0.98 - master is entirely different) we create ByteBuffer just to create a byte[], which is then used to create a KeyValue.
> We can save the creation of the ByteBuffer and hence save allocating an extra object for each KV we find by creating the byte[] directly.
> In a Phoenix count\(*) query that saved from 10% of runtime.


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