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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2009/05/10 03:42:45 UTC

[jira] Created: (CASSANDRA-159) avoid repetetive sorting in CFS.getColumnFamilyFromDisk

avoid repetetive sorting in CFS.getColumnFamilyFromDisk
-------------------------------------------------------

                 Key: CASSANDRA-159
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-159
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Jonathan Ellis
             Fix For: 0.4


getColumnFamilyFromDisk starts out with

        List<String> files = new ArrayList<String>();        
    	lock_.readLock().lock();
        try
        {
            files.addAll(ssTables_);
            Collections.sort(files, new FileNameComparator(FileNameComparator.Descending));
        }
        finally
        {
            lock_.readLock().unlock();
        }

this is silly, we should really keep the list sorted instead of re-sorting for *each* *read*.

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[jira] Updated: (CASSANDRA-159) avoid repetetive sorting in CFS.getColumnFamilyFromDisk

Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CASSANDRA-159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-159:
-------------------------------------

    Attachment: 0002-CASSANDRA-159-fix-race-condition-between-when-memtable.txt
                0001-extract-tests-that-could-conflict-with-each-other-to-a.txt

> avoid repetetive sorting in CFS.getColumnFamilyFromDisk
> -------------------------------------------------------
>
>                 Key: CASSANDRA-159
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-159
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>             Fix For: 0.4
>
>
> getColumnFamilyFromDisk starts out with
>         List<String> files = new ArrayList<String>();        
>     	lock_.readLock().lock();
>         try
>         {
>             files.addAll(ssTables_);
>             Collections.sort(files, new FileNameComparator(FileNameComparator.Descending));
>         }
>         finally
>         {
>             lock_.readLock().unlock();
>         }
> this is silly, we should really keep the list sorted instead of re-sorting for *each* *read*.

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[jira] Resolved: (CASSANDRA-159) avoid repetetive sorting in CFS.getColumnFamilyFromDisk

Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CASSANDRA-159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-159.
--------------------------------------

    Resolution: Fixed
      Assignee: Jonathan Ellis

fixed by patch for CASSANDRA-161

> avoid repetetive sorting in CFS.getColumnFamilyFromDisk
> -------------------------------------------------------
>
>                 Key: CASSANDRA-159
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-159
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>             Fix For: 0.4
>
>
> getColumnFamilyFromDisk starts out with
>         List<String> files = new ArrayList<String>();        
>     	lock_.readLock().lock();
>         try
>         {
>             files.addAll(ssTables_);
>             Collections.sort(files, new FileNameComparator(FileNameComparator.Descending));
>         }
>         finally
>         {
>             lock_.readLock().unlock();
>         }
> this is silly, we should really keep the list sorted instead of re-sorting for *each* *read*.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


[jira] Updated: (CASSANDRA-159) avoid repetetive sorting in CFS.getColumnFamilyFromDisk

Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CASSANDRA-159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-159:
-------------------------------------

    Attachment:     (was: 0001-extract-tests-that-could-conflict-with-each-other-to-a.txt)

> avoid repetetive sorting in CFS.getColumnFamilyFromDisk
> -------------------------------------------------------
>
>                 Key: CASSANDRA-159
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-159
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>             Fix For: 0.4
>
>
> getColumnFamilyFromDisk starts out with
>         List<String> files = new ArrayList<String>();        
>     	lock_.readLock().lock();
>         try
>         {
>             files.addAll(ssTables_);
>             Collections.sort(files, new FileNameComparator(FileNameComparator.Descending));
>         }
>         finally
>         {
>             lock_.readLock().unlock();
>         }
> this is silly, we should really keep the list sorted instead of re-sorting for *each* *read*.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


[jira] Updated: (CASSANDRA-159) avoid repetetive sorting in CFS.getColumnFamilyFromDisk

Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CASSANDRA-159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-159:
-------------------------------------

    Attachment:     (was: 0002-CASSANDRA-159-fix-race-condition-between-when-memtable.txt)

> avoid repetetive sorting in CFS.getColumnFamilyFromDisk
> -------------------------------------------------------
>
>                 Key: CASSANDRA-159
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-159
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jonathan Ellis
>             Fix For: 0.4
>
>
> getColumnFamilyFromDisk starts out with
>         List<String> files = new ArrayList<String>();        
>     	lock_.readLock().lock();
>         try
>         {
>             files.addAll(ssTables_);
>             Collections.sort(files, new FileNameComparator(FileNameComparator.Descending));
>         }
>         finally
>         {
>             lock_.readLock().unlock();
>         }
> this is silly, we should really keep the list sorted instead of re-sorting for *each* *read*.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.