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https://issues.apache.org/jira/browse/HBASE-16981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15836539#comment-15836539
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huaxiang sun commented on HBASE-16981:
--------------------------------------
Hi [~jingcheng.du], I checked the comments from Ted and Esteban, their comments
has been addressed or answered. As for your comment,
{code}
public void updateLatestDate(final String latestDate) {
if ((this.latestDate == null) || (this.latestDate.compareTo(latestDate) <
0)) {
this.latestDate = latestDate;
}
}
{code}
there is a check (this.latestDate == null) already, the input latestDate is not
going to to null. Maybe I am missing something here, thanks.
> Expand Mob Compaction Partition policy from daily to weekly, monthly and
> beyond
> -------------------------------------------------------------------------------
>
> Key: HBASE-16981
> URL: https://issues.apache.org/jira/browse/HBASE-16981
> Project: HBase
> Issue Type: New Feature
> Components: mob
> Affects Versions: 2.0.0
> Reporter: huaxiang sun
> Assignee: huaxiang sun
> Attachments: HBASE-16981.master.001.patch,
> HBASE-16981.master.002.patch, HBASE-16981.master.003.patch,
> HBASE-16981.master.004.patch,
> Supportingweeklyandmonthlymobcompactionpartitionpolicyinhbase.pdf
>
>
> Today the mob region holds all mob files for all regions. With daily
> partition mob compaction policy, after major mob compaction, there is still
> one file per region daily. Given there is 365 days in one year, at least 365
> files per region. Since HDFS has limitation for number of files under one
> folder, this is not going to scale if there are lots of regions. To reduce
> mob file number, we want to introduce other partition policies such as
> weekly, monthly to compact mob files within one week or month into one file.
> This jira is create to track this effort.
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