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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2365) Double-assignment around split
Date Wed, 24 Mar 2010 23:59:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849537#action_12849537
] 

Jean-Daniel Cryans commented on HBASE-2365:
-------------------------------------------

mudphone on IRC got the same problem:

{code}
2010-03-24 07:04:39,139 DEBUG org.apache.hadoop.hbase.master.BaseScanner: Current assignment
of furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
is not valid;  serverAddress=, startCode=0 unknown.
2010-03-24 07:04:39,141 DEBUG org.apache.hadoop.hbase.master.BaseScanner: Current assignment
of furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
is not valid;  serverAddress=, startCode=0 unknown.
2010-03-24 07:04:39,198 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning for
address: 10.194.146.47:60020, startcode: 1269312324850, load: (requests=277, regions=74, usedHeap=977,
maxHeap=1993): total nregions to assign=2, nregions to reach balance=0, isMetaAssign=false
2010-03-24 07:04:39,198 DEBUG org.apache.hadoop.hbase.master.RegionManager: Doing for address:
10.194.146.47:60020, startcode: 1269312324850, load: (requests=277, regions=74, usedHeap=977,
maxHeap=1993) nregions: 2 and nRegionsToAssign: 2
2010-03-24 07:04:39,198 INFO org.apache.hadoop.hbase.master.RegionManager: Assigning region
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
to ip-10-194-146-47.ec2.internal,60020,1269312324850
2010-03-24 07:04:39,198 INFO org.apache.hadoop.hbase.master.RegionManager: Assigning region
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
to ip-10-194-146-47.ec2.internal,60020,1269312324850
2010-03-24 07:04:39,469 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_SPLIT:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269198117631:
Daughters; furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319,
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
from ip-10-243-63-175.ec2.internal,60020,1269312324858; 1 of 3
2010-03-24 07:04:39,474 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning for
address: 10.243.63.175:60020, startcode: 1269312324858, load: (requests=16, regions=76, usedHeap=1280,
maxHeap=1993): total nregions to assign=2, nregions to reach balance=2, isMetaAssign=false
2010-03-24 07:04:39,474 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning one
region only (playing it safe..)
2010-03-24 07:04:39,474 INFO org.apache.hadoop.hbase.master.RegionManager: Assigning region
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
to ip-10-243-63-175.ec2.internal,60020,1269312324858
2010-03-24 07:04:39,559 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning for
address: 10.194.95.159:60020, startcode: 1269312324900, load: (requests=183, regions=75, usedHeap=1268,
maxHeap=1993): total nregions to assign=1, nregions to reach balance=1, isMetaAssign=false
2010-03-24 07:04:39,561 DEBUG org.apache.hadoop.hbase.master.RegionManager: Assigning one
region only (playing it safe..)
2010-03-24 07:04:39,561 INFO org.apache.hadoop.hbase.master.RegionManager: Assigning region
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
to ip-10-194-95-159.ec2.internal,60020,1269312324900
2010-03-24 07:04:39,731 INFO org.apache.hadoop.hbase.master.BaseScanner: RegionManager.metaScanner
scan of 454 row(s) of meta region {server: 10.195.9.219:60020, regionname: .META.,,1, startKey:
<>} complete
2010-03-24 07:04:39,732 INFO org.apache.hadoop.hbase.master.BaseScanner: All 1 .META. region(s)
scanned
2010-03-24 07:04:40,253 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_PROCESS_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
from ip-10-194-146-47.ec2.internal,60020,1269312324850; 1 of 3
2010-03-24 07:04:40,253 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
from ip-10-194-146-47.ec2.internal,60020,1269312324850; 2 of 3
2010-03-24 07:04:40,253 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
from ip-10-194-146-47.ec2.internal,60020,1269312324850; 3 of 3
2010-03-24 07:04:40,253 DEBUG org.apache.hadoop.hbase.master.HMaster: Processing todo: PendingOpenOperation
from ip-10-194-146-47.ec2.internal,60020,1269312324850
2010-03-24 07:04:40,253 INFO org.apache.hadoop.hbase.master.RegionServerOperation: furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
open on 10.194.146.47:60020
2010-03-24 07:04:40,254 INFO org.apache.hadoop.hbase.master.RegionServerOperation: Updated
row furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
in region .META.,,1 with startcode=1269312324850, server=10.194.146.47:60020
2010-03-24 07:04:40,254 DEBUG org.apache.hadoop.hbase.master.HMaster: Processing todo: PendingOpenOperation
from ip-10-194-146-47.ec2.internal,60020,1269312324850
2010-03-24 07:04:40,254 INFO org.apache.hadoop.hbase.master.RegionServerOperation: furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
open on 10.194.146.47:60020
2010-03-24 07:04:40,255 INFO org.apache.hadoop.hbase.master.RegionServerOperation: Updated
row furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
in region .META.,,1 with startcode=1269312324850, server=10.194.146.47:60020
2010-03-24 07:04:40,496 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_PROCESS_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
from ip-10-243-63-175.ec2.internal,60020,1269312324858; 1 of 2
2010-03-24 07:04:40,496 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
from ip-10-243-63-175.ec2.internal,60020,1269312324858; 2 of 2
2010-03-24 07:04:40,496 DEBUG org.apache.hadoop.hbase.master.ServerManager: region server
10.243.63.175:60020 should not have opened region furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256810375918:53ba3cc0-cf02-1c15-3733-0ff8455ed5ad,1269414278319
2010-03-24 07:04:40,582 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_PROCESS_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
from ip-10-194-95-159.ec2.internal,60020,1269312324900; 1 of 2
2010-03-24 07:04:40,582 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_OPEN:
furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
from ip-10-194-95-159.ec2.internal,60020,1269312324900; 2 of 2
2010-03-24 07:04:40,582 DEBUG org.apache.hadoop.hbase.master.ServerManager: region server
10.194.95.159:60020 should not have opened region furtive_production_consumer_events_d4a03af6-1d95-4b77-9aac-22389852d901,1256383584000:4923724a-d6ee-6d96-25cf-215b3201b5f6,1269414278319
{code}

I think the problem is that in this case the master was able to assign, but the split report
came in just before the the first batch of assignments were reported and since we only do
this:

{code}

  private void doRegionAssignment(final RegionState rs,
      final HServerInfo sinfo, final ArrayList<HMsg> returnMsgs) {
    String regionName = rs.getRegionInfo().getRegionNameAsString();
    LOG.info("Assigning region " + regionName +
        " to " + sinfo.getServerName());
    rs.setPendingOpen(sinfo.getServerName());
    synchronized (this.regionsInTransition) {
      this.regionsInTransition.put(regionName, rs);
    }

    returnMsgs.add(new HMsg(HMsg.Type.MSG_REGION_OPEN, rs.getRegionInfo()));
  }
{code}

Then we don't have the 3 fields in the .META. entry as our check expects.

> Double-assignment around split
> ------------------------------
>
>                 Key: HBASE-2365
>                 URL: https://issues.apache.org/jira/browse/HBASE-2365
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>            Priority: Blocker
>             Fix For: 0.20.4, 0.21.0
>
>         Attachments: zheng.tgz
>
>
> Its looking like we have a split updating .META. with daughter regions and then before
we process the split in master, one of the daughters has already been assigned.  On processing
of the split, we assign daughter again.
> I thought this had been fixed previously?  Doesn't seem so.  Need to look again.
> Here is evidence for region named:
> {code}summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017{code}
> First master-side:
> {code}
> 2010-03-15 16:06:52,153 INFO org.apache.hadoop.hbase.master.RegionManager: Assigning
region summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
to cactus208,60020,12686305486412010-03-15 16:06:52,156 INFO org.apache.hadoop.hbase.master.BaseScanner:
RegionManager.metaScanner scan of 245 row(s) of meta region {server: 172.16.1.209:60020, regionname:
.META.,,1, startKey: <>} complete2010-03-15 16:06:52,156 INFO org.apache.hadoop.hbase.master.BaseScanner:
All 1 .META. region(s) scanned2010-03-15 16:06:52,841 INFO org.apache.hadoop.hbase.master.RegionManager:
Assigning region summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E5\x25A4\x25A7\x25E8\x25BF\x259E\x25E5\x2588\x2598\x25E5\x25B8\x2588\x25E5\x2582\x2585\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E5\x2587\x25B9\x25E9\x2599\x25B7\x25E4\x25BF\x25AE\x25E5\x25A4\x258D\x25E6\x2596\x25BD\x25E5\x25B7\x25A5\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E7\x2594\x25A8\x25E5\x2593\x2581\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
to cactus210,60020,12686305508862010-03-15 16:06:54,377 INFO org.apache.hadoop.hbase.master.ServerManager:
Processing MSG_REPORT_SPLIT: summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E5\x25A4\x25A7\x25E8\x25BF\x259E\x25E5\x2588\x2598\x25E5\x25B8\x2588\x25E5\x2582\x2585\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E5\x2587\x25B9\x25E9\x2599\x25B7\x25E4\x25BF\x25AE\x25E5\x25A4\x258D\x25E6\x2596\x25BD\x25E5\x25B7\x25A5\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E7\x2594\x25A8\x25E5\x2593\x2581\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268611349836:
Daughters; summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E5\x25A4\x25A7\x25E8\x25BF\x259E\x25E5\x2588\x2598\x25E5\x25B8\x2588\x25E5\x2582\x2585\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E5\x2587\x25B9\x25E9\x2599\x25B7\x25E4\x25BF\x25AE\x25E5\x25A4\x258D\x25E6\x2596\x25BD\x25E5\x25B7\x25A5\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E7\x2594\x25A8\x25E5\x2593\x2581\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017,
summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
from cactus209,60020,1268630548451; 1 of 32010-03-15 16:06:54,388 INFO org.apache.hadoop.hbase.master.RegionManager:
Assigning region summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
to cactus209,60020,1268630548451
> {code}
> Its hard to read but above is an assignment, the split message, then what seems to be
same region being assigned again.
> Here is RS side on 209 server:
> {code}
> 2010-03-15 16:06:29,727 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Worker:
MSG_REGION_OPEN: summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
> 2010-03-15 16:06:29,792 INFO org.apache.hadoop.hbase.regionserver.HRegion: region summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017/1011052036
available; sequence id is 199443346
> 2010-03-15 16:06:29,792 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Worker:
MSG_REGION_OPEN: summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E5\x25A4\x25A7\x25E8\x25BF\x259E\x25E5\x2588\x2598\x25E5\x25B8\x2588\x25E5\x2582\x2585\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E5\x2587\x25B9\x25E9\x2599\x25B7\x25E4\x25BF\x25AE\x25E5\x25A4\x258D\x25E6\x2596\x25BD\x25E5\x25B7\x25A5\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E7\x2594\x25A8\x25E5\x2593\x2581\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
> 2010-03-15 16:06:29,793 INFO org.apache.hadoop.hbase.regionserver.HRegion: Starting compaction
on region summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017
> 2010-03-15 16:06:29,944 INFO org.apache.hadoop.hbase.regionserver.HRegion: region summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E5\x25A4\x25A7\x25E8\x25BF\x259E\x25E5\x2588\x2598\x25E5\x25B8\x2588\x25E5\x2582\x2585\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E5\x2587\x25B9\x25E9\x2599\x25B7\x25E4\x25BF\x25AE\x25E5\x25A4\x258D\x25E6\x2596\x25BD\x25E5\x25B7\x25A5\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E7\x2594\x25A8\x25E5\x2593\x2581\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017/1971466363
available; sequence id is 199443345
> 2010-03-15 16:06:32,750 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_CLOSE_WITHOUT_REPORT:
summary,SITE_0000000032\x01pt\x0120100314000000\x01\x25E7\x258C\x25AE\x25E5\x258E\x25BF\x25E5\x2586\x2580\x25E9\x25B9\x25B0\x25E6\x2591\x25A9\x25E6\x2593\x25A6\x25E6\x259D\x2590\x25E6\x2596\x2599\x25E5\x258E\x2582\x2B\x25E6\x25B1\x25BD\x25E8\x25BD\x25A6\x25E9\x2585\x258D\x25E4\x25BB\x25B6\x25EF\x25BC\x258C\x25E5\x2598\x2580\x25E9\x2593\x2583\x25E9\x2593\x2583--\x25E7\x259C\x259F\x25E5\x25AE\x259E\x25E5\x25AE\x2589\x25E5\x2585\x25A8\x25E7\x259A\x2584\x25E7\x2594\x25B5\x25E8\x25AF\x259D\x25E3\x2580\x2581\x25E7\x25BD\x2591\x25E7\x25BB\x259C\x25E4\x25BA\x2592\x25E5\x258A\x25A8\x25E4\x25BA\x25A4\x25E5\x258F\x258B\x25E7\x25A4\x25BE\x25E5\x258C\x25BA\x25EF\x25BC\x2581,1268640385017:
Duplicate assignment
> {code}
> See how we end with 'Duplicate assignment' message?

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