[jira] [Updated] (HBASE-5010) Filter HFiles based on TTL

["Mikhail Bautin (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-5010?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mikhail Bautin updated HBASE-5010:
----------------------------------

       Resolution: Fixed
    Fix Version/s: 0.94.0
         Assignee: Mikhail Bautin  (was: Zhihong Yu)
           Status: Resolved  (was: Patch Available)

A follow-up fix was submitted as part of HBASE-5274 to bring the trunk fix for this issue to parity with the 89-fb fix. Resolving.
                
> Filter HFiles based on TTL
> --------------------------
>
>                 Key: HBASE-5010
>                 URL: https://issues.apache.org/jira/browse/HBASE-5010
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Mikhail Bautin
>            Assignee: Mikhail Bautin
>             Fix For: 0.94.0
>
>         Attachments: 5010.patch, D1017.1.patch, D1017.2.patch, D909.1.patch, D909.2.patch, D909.3.patch, D909.4.patch, D909.5.patch, D909.6.patch
>
>
> In ScanWildcardColumnTracker we have
> {code:java}
>  
>   this.oldestStamp = EnvironmentEdgeManager.currentTimeMillis() - ttl;
>   ...
>   private boolean isExpired(long timestamp) {
>     return timestamp < oldestStamp;
>   }
> {code}
> but this time range filtering does not participate in HFile selection. In one real case this caused next() calls to time out because all KVs in a table got expired, but next() had to iterate over the whole table to find that out. We should be able to filter out those HFiles right away. I think a reasonable approach is to add a "default timerange filter" to every scan for a CF with a finite TTL and utilize existing filtering in StoreFile.Reader.passesTimerangeFilter.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira