the bug about the region nums when hbck tool to fix the region multi deployed
problem.
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Key: HBASE-4134
URL: https://issues.apache.org/jira/browse/HBASE-4134
Project: HBase
Issue Type: Bug
Affects Versions: 0.90.3
Reporter: feng xu
Fix For: 0.90.4
I run ./hbase hbck to check my cluster healthly.
the result is:
.......
ERROR: Region test1,230778,1311216270050.fff783529fcd983043610eaa1cc5c2fe. is
listed in META on region server 158-1-91-101:20020 but is multiply assigned to
region servers 158-1-91-101:20020, 158-1-91-105:20020
ERROR: Region test1,252103,1311216293671.fff9ed2cb69bdce535451a07686c0db5. is
listed in META on region server 158-1-91-101:20020 but is multiply assigned to
region servers 158-1-91-101:20020, 158-1-91-105:20020
ERROR: Region test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0. is
listed in META on region server 158-1-91-103:20020 but is multiply assigned to
region servers 158-1-91-103:20020, 158-1-91-105:20020
Summary:
-ROOT- is okay.
Number of regions: 1
Deployed on: 158-1-91-105:20020
.META. is okay.
Number of regions: 1
Deployed on: 158-1-91-103:20020
test1 is okay.
Number of regions: 25297
Deployed on: 158-1-91-101:20020 158-1-91-103:20020 158-1-91-105:20020
14829 inconsistencies detected.
Status: INCONSISTENT
after run the ./hbase hbck -fix,the problem be fixed but I found that total
region nums also be added when no data be putted.
.......
Line 105: 2011-07-22 02:19:02,866 INFO
org.apache.hadoop.hbase.master.LoadBalancer: Skipping load balancing.
servers=3 regions=25299 average=8433.0 mostloaded=8433
Line 185253: 2011-07-22 03:06:11,832 INFO
org.apache.hadoop.hbase.master.LoadBalancer: Skipping load balancing.
servers=3 regions=35029 average=11676.333 mostloaded=11677 leastloaded=11676
....
I check the test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0. region
to find what happend on this region when execute the hbck tool.
I found that the test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0.
be close silently whitout update zk node. if be opened again on another
regionserver this region will be count twice AssignmentManager.servers list.
the open log is:
Line 178967: 2011-07-22 02:47:51,247 DEBUG
org.apache.hadoop.hbase.master.AssignmentManager: Handling new unassigned node:
/hbase/unassigned/ffff52782c0241a598b3e37ca8729da0
(region=test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0.,
server=HBCKServerName, state=M_ZK_REGION_OFFLINE)
Line 178968: 2011-07-22 02:47:51,247 INFO
org.apache.hadoop.hbase.master.AssignmentManager: Handling HBCK triggered
transition=M_ZK_REGION_OFFLINE, server=HBCKServerName,
region=ffff52782c0241a598b3e37ca8729da0
Line 178969: 2011-07-22 02:47:51,248 INFO
org.apache.hadoop.hbase.master.AssignmentManager: HBCK repair is triggering
assignment of
region=test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0.
Line 178970: 2011-07-22 02:47:51,248 DEBUG
org.apache.hadoop.hbase.master.AssignmentManager: No previous transition plan
was found (or we are ignoring an existing plan) for
test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0. so generated a
random one; hri=test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0.,
src=, dest=158-1-91-101,20020,1311231878544; 3 (online=3, exclude=null)
available servers
Line 178971: 2011-07-22 02:47:51,248 DEBUG
org.apache.hadoop.hbase.master.AssignmentManager: Assigning region
test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0. to
158-1-91-101,20020,1311231878544
Line 178983: 2011-07-22 02:47:51,285 DEBUG
org.apache.hadoop.hbase.master.AssignmentManager: Handling
transition=RS_ZK_REGION_OPENING, server=158-1-91-101,20020,1311231878544,
region=ffff52782c0241a598b3e37ca8729da0
Line 179001: 2011-07-22 02:47:51,318 DEBUG
org.apache.hadoop.hbase.master.AssignmentManager: Handling
transition=RS_ZK_REGION_OPENED, server=158-1-91-101,20020,1311231878544,
region=ffff52782c0241a598b3e37ca8729da0
Line 179002: 2011-07-22 02:47:51,319 DEBUG
org.apache.hadoop.hbase.master.handler.OpenedRegionHandler: Handling OPENED
event for ffff52782c0241a598b3e37ca8729da0; deleting unassigned node
Line 179003: 2011-07-22 02:47:51,319 DEBUG
org.apache.hadoop.hbase.zookeeper.ZKAssign:
master:20000-0x1314ac5addb0042-0x1314ac5addb0042 Deleting existing unassigned
node for ffff52782c0241a598b3e37ca8729da0 that is in expected state
RS_ZK_REGION_OPENED
Line 179007: 2011-07-22 02:47:51,326 DEBUG
org.apache.hadoop.hbase.zookeeper.ZKAssign:
master:20000-0x1314ac5addb0042-0x1314ac5addb0042 Successfully deleted
unassigned node for region ffff52782c0241a598b3e37ca8729da0 in expected state
RS_ZK_REGION_OPENED
Line 179011: 2011-07-22 02:47:51,335 WARN
org.apache.hadoop.hbase.master.AssignmentManager: Overwriting
ffff52782c0241a598b3e37ca8729da0 on
serverName=158-1-91-103,20020,1311232056655, load=(requests=0, regions=0,
usedHeap=0, maxHeap=0)
Line 179012: 2011-07-22 02:47:51,335 DEBUG
org.apache.hadoop.hbase.master.handler.OpenedRegionHandler: Opened region
test1,282187,1311216322104.ffff52782c0241a598b3e37ca8729da0. on
158-1-91-101,20020,1311231878544
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