hi, guys: i upgrade our cluster recently, after upgrade, i found some wired problems:
in Master.log, there some a lots of logs like below: 2016-04-07 11:57:00,597 DEBUG [region-location-0] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_tutor_user_resource/23a62ee5b1d64bd8f57f4e31c383e343/m 2016-04-07 11:57:00,597 DEBUG [region-location-3] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_solar_resource/72c36fc12fcc95c66167c2199d8bcc36/m 2016-04-07 11:57:02,297 DEBUG [region-location-4] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_solar_user_image/c2712ea3fbb58eaf5cb7ded2b40c1df5/d 2016-04-07 11:57:02,337 DEBUG [region-location-4] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_solar_user_image/c2712ea3fbb58eaf5cb7ded2b40c1df5/m 2016-04-07 11:57:58,335 DEBUG [region-location-3] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_tarzan_user_resource/f75f5acbd22266ea596d0f1ceb0130f9/d 2016-04-07 11:57:58,335 DEBUG [region-location-3] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_tarzan_user_resource/f75f5acbd22266ea596d0f1ceb0130f9/m 2016-04-07 11:57:58,826 DEBUG [region-location-3] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_apolo_user_resource/75dc4eb5143d28a25c287918c368f6c5/d 2016-04-07 11:57:58,866 DEBUG [region-location-0] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_apolo_resource/08cffb3598c6f4446a68aabf53b1e498/d 2016-04-07 11:57:58,867 DEBUG [region-location-3] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_apolo_user_resource/75dc4eb5143d28a25c287918c368f6c5/m 2016-04-07 11:57:58,906 DEBUG [region-location-0] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_apolo_resource/08cffb3598c6f4446a68aabf53b1e498/m 2016-04-07 11:57:59,504 DEBUG [region-location-0] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_solar_user_resource/2c9272fcde86a28b0cf6b479ef0b3745/d 2016-04-07 11:57:59,544 DEBUG [region-location-0] regionserver.HRegionFileSystem: No StoreFiles for: hdfs://common-cluster:8020/hbase/data/default/gallery_solar_user_resource/2c9272fcde86a28b0cf6b479ef0b3745/m And in web-UI, there are alway some split regions in one table. The split regions number seems never be changed after upgraded. I am not sure the reason of this problem, have you meet this in practice?