[HBASE-2516] Ugly IOE when region is being closed; rather, should NSRE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.90.0
• Labels: moved_from_0_20_5
• Hadoop Flags: Reviewed
• Assignee: Daniel Ploeg
• Reporter: Michael Stack
• Created: 05/May/10 16:37
• Updated: 20/Nov/15 12:43
• Resolved: 24/May/10 15:44

Description

I'm running 80/20 YCSB (80% reads/20% writes). I see this from time to time in logs (especially if I do big fat bulk upload at same time – having trouble making ycsb do heavy loading at mo):

2010-05-05 06:57:01,165 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: Updates disabled for region, no outstanding scanners on usertable,user1431413702,1273040674721
2010-05-05 06:57:01,165 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: No more row locks outstanding on region usertable,user1431413702,1273040674721
2010-05-05 06:57:01,178 DEBUG org.apache.hadoop.hbase.regionserver.Store: closed cf
2010-05-05 06:57:01,178 INFO org.apache.hadoop.hbase.regionserver.HRegion: Closed usertable,user1431413702,1273040674721
2010-05-05 06:57:01,178 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer:
java.io.IOException: Region usertable,user1431413702,1273040674721 closed
        at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1179)
        at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1172)
        at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2506)
        at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2493)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1742)
        at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:657)
        at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)

This should be a NSRE.

J-D took a look and fact that we do an IOE 'region closed' is way old, from before the time forgot, so its just always been there just more obvious now that Get is a Scan.

Issue Links

• relates to: HBASE-2486 Add simple "anti-entropy" for region assignment