You would be able to find in region server log(s). Can you do quick inspection of the hfiles using:
http://hbase.apache.org/book.html#hfile_tool BTW you're still on old release of 0.98.x, right ? On Thu, Nov 17, 2016 at 6:40 PM, Xi Yang <[email protected]> wrote: > Thank you for reply. > > Yes. There are many regions have this problem. And those regions were > created several years ago. > hbase.hregion.majorcompaction of our cluster is 7 days. > Where can I see the last major compaction time? > > Thanks, > Alex > > 2016-11-17 18:22 GMT-08:00 Ted Yu <[email protected]>: > > > When was the last time major compaction was performed on this region ? > > > > Were you referring to the store files by 'them' in your question ? > > > > Cheers > > > > On Thu, Nov 17, 2016 at 6:18 PM, Xi Yang <[email protected]> wrote: > > > > > I have some regions are empty. But HBase doesn't remove them, why? > > > > > > You can see the storeFileSize is only 549. But I use hbase shell to > scan > > > this region, the result is empty > > > > > > "Namespace_default_table_java_app_logs_region_ > > > 3854912733f1acaaa8a255abd6b7b1ec_metric_storeFileCount" > > > : 1, > > > "Namespace_default_table_java_app_logs_region_ > > > 3854912733f1acaaa8a255abd6b7b1ec_metric_memStoreSize" > > > : 424, > > > "Namespace_default_table_java_app_logs_region_ > > > 3854912733f1acaaa8a255abd6b7b1ec_metric_storeFileSize" > > > : 549, > > > "Namespace_default_table_java_app_logs_region_ > > > 3854912733f1acaaa8a255abd6b7b1ec_metric_compactionsCompletedCount" > > > : 4, > > > "Namespace_default_table_java_app_logs_region_ > > > 3854912733f1acaaa8a255abd6b7b1ec_metric_numBytesCompactedCount" > > > : 8503271111, > > > "Namespace_default_table_java_app_logs_region_ > > > 3854912733f1acaaa8a255abd6b7b1ec_metric_numFilesCompactedCount" > > > : 4, > > > > > >
