OK, JIRA issue is below:

https://issues.apache.org/jira/browse/HBASE-3723

I will upload the patch late.


Zhou Shuaifeng(Frank)
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-----邮件原件-----
发件人: [email protected] [mailto:[email protected]] 代表 Stack
发送时间: 2011年4月1日 12:00
收件人: [email protected]
主题: Re: Majorcompactchecker problem in 0.90.1

Well spotted.  It looks like we should be setting result to true if we
do not NOT fall into 'f (sf.isMajorCompaction() &&....'.  Please file
a JIRA, and it looks like you have a patch too.  Thanks for reporting
this.
St.Ack

On Thu, Mar 31, 2011 at 6:16 PM, Zhoushuaifeng <[email protected]> wrote:
> Hi,
>
> I found there may be some problem with majorcompactchecker in 0.90.1:
>
> In the function store.isMajorCompaction:
>      if (filesToCompact.size() == 1) {
>        // Single file
>        StoreFile sf = filesToCompact.get(0);
>        long oldest =
>            (sf.getReader().timeRangeTracker == null) ?
>                Long.MIN_VALUE :
>                now - sf.getReader().timeRangeTracker.minimumTimestamp;
>        if (sf.isMajorCompaction() &&
>            (this.ttl == HConstants.FOREVER || oldest < this.ttl)) {
>          if (LOG.isDebugEnabled()) {
>            LOG.debug("Skipping major compaction of " + this.storeNameStr +
>                " because one (major) compacted file only and oldestTime " +
>                oldest + "ms is < ttl=" + this.ttl);
>          }
>        }
>      } else {
> When there is only one storefile in the store, and some keyvalues' TTL are 
> overtime, the majorcompactchecker should send this region to the compactquene 
> and run a majorcompact to clean these outdated data. But according to the 
> code in 0.90.1, it will do nothing. I think this may be a problem should be 
> fixed.
>
>
> Zhou Shuaifeng(Frank)
>
>
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