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From mail list <louis.hust...@gmail.com>
Subject Re: YCSB load data quit because hbase region too busy
Date Fri, 21 Nov 2014 03:33:27 GMT
If set the target,  YCSB will sleep to control the flow, so it looks like the same as fewer
threads.
But I want to know with heavy write, why some region which exceeds the limit no flushed.
Maybe like you said, it wait in a flush queue, i will try to repeat the scenario and lookup
the 
flush queue.

On Nov 21, 2014, at 1:44, Vladimir Rodionov <vladrodionov@gmail.com> wrote:

> Could you please rerun your tests with -target ?
> You should limit # of transactions per second and find the maximum your
> cluster can sustain.
> 
> -Vladimir Rodionov
> 
> On Wed, Nov 19, 2014 at 10:53 PM, mail list <louis.hust.ml@gmail.com> wrote:
> 
>> hi all,
>> 
>> I build an HBASE test environment, with three PC server, with CHD 5.1.0
>> 
>> pc1 pc2 pc3
>> 
>> pc1 and pc2 as HMASTER and hadoop namenode
>> pc3 as RegionServer and datanode
>> 
>> Then I create user as following:
>> 
>> create 'usertable', 'family', {SPLITS => (1..100).map {|i| "user#{1000+i*(9999-1000)/100}"}
}
>> 
>> 
>> Using YCSB for load data as following:
>> 
>> ./bin/ycsb  load  hbase   -P workloads/workloadc  -p columnfamily=family
>> -p recordcount=1000000000   -p threadcount=32  -s  > result/workloadc
>> 
>> 
>> But when after a while, the ycsb return with following error:
>> 
>> 14/11/20 12:23:44 INFO client.AsyncProcess: #15, table=usertable,
>> attempt=35/35 failed 715 ops, last exception:
>> org.apache.hadoop.hbase.RegionTooBusyException:
>> org.apache.hadoop.hbase.RegionTooBusyException: Above memstore limit,
>> regionName=usertable,user9099,1416453519676.2552d36eb407a8af12d2b58c973d68a9.,
>> server=l-hbase10.dba.cn1.qunar.com,60020,1416451280772,
>> memstoreSize=536897120, blockingMemStoreSize=536870912
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegion.checkResources(HRegion.java:2822)
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2234)
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2201)
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2205)
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegionServer.doBatchOp(HRegionServer.java:4253)
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegionServer.doNonAtomicRegionMutation(HRegionServer.java:3469)
>>        at
>> org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:3359)
>>        at
>> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29503)
>>        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2012)
>>        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98)
>>        at
>> org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.consumerLoop(SimpleRpcScheduler.java:160)
>>        at
>> org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.access$000(SimpleRpcScheduler.java:38)
>>        at
>> org.apache.hadoop.hbase.ipc.SimpleRpcScheduler$1.run(SimpleRpcScheduler.java:110)
>>        at java.lang.Thread.run(Thread.java:744)
>> on l-hbase10.dba.cn1.qunar.com,60020,1416451280772, tracking started Thu
>> Nov 20 12:15:07 CST 2014, retrying after 20051 ms, replay 715 ops.
>> 
>> 
>> It seems the user9099 region is too busy, so I lookup the memstore metrics
>> in web:
>> 
>> 
>> 
>> As you see, the user9099 is bigger than other region, I think it is
>> flushing, but after a while, it does not change to a small size and YCSB
>> quit finally.
>> 
>> The region server is configured as below:
>> 
>> Summary: HP DL380p Gen8, 1 x Xeon E5-2630 v2 2.60GHz, 126GB / 128GB
>> 1600MHz DDR3
>> System: HP ProLiant DL380p Gen8
>> Processors: 1 (of 2) x Xeon E5-2630 v2 2.60GHz 100MHz FSB (HT enabled, 6
>> cores, 24 threads)
>> Memory: 126GB / 128GB 1600MHz DDR3 == 16 x 8GB, 8 x empty
>> Disk: sda (scsi2): 450GB (1%) JBOD == 1 x HP-LOGICAL-VOLUME
>> Disk: sdb (scsi2): 27TB (0%) JBOD == 1 x HP-LOGICAL-VOLUME
>> Disk-Control: ata_piix0: Intel C600/X79 series chipset 4-Port SATA IDE
>> Controller
>> Disk-Control: hpsa0: Hewlett-Packard Company Smart Array Gen8 Controllers
>> Disk-Control: shannon0: Device 1cb0:0275
>> Network: eth0 (tg3): Broadcom NetXtreme BCM5719 Gigabit PCIe,
>> 40:a8:f0:23:55:fc, 1000Mb/s <full-duplex>
>> Network: eth1 (tg3): Broadcom NetXtreme BCM5719 Gigabit PCIe,
>> 40:a8:f0:23:55:fd, no carrier
>> Network: eth2 (tg3): Broadcom NetXtreme BCM5719 Gigabit PCIe,
>> 40:a8:f0:23:55:fe, no carrier
>> Network: eth3 (tg3): Broadcom NetXtreme BCM5719 Gigabit PCIe,
>> 40:a8:f0:23:55:ff, no carrier
>> OS: CentOS 6.4 (Final), Linux 2.6.32-358.23.2.el6.x86_64 x86_64, 64-bit
>> BIOS: HP P70 02/10/2014
>> Hostname: l-hbase10.dba.cn1.qunar.com
>> 
>> And i attach the hbase configuration file.
>> 
>> 
>> I am new to HBase, any idea will be appreciated!
>> 
>> 
>> 


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