Thanks @ted, your suggestions about 2 and 3 are what i need !
2016-02-25 10:39 GMT+08:00 Heng Chen <[email protected]>:
> I pick up some logs in master.log about one region
> "ad283942aff2bba6c0b94ff98a904d1a"
>
>
> 2016-02-24 16:24:35,610 INFO [AM.ZK.Worker-pool2-t3491]
> master.RegionStates: Transition null to {ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068}
> 2016-02-24 16:25:40,472 WARN
> [MASTER_SERVER_OPERATIONS-dx-common-hmaster1-online:60000-0]
> master.RegionStates: THIS SHOULD NOT HAPPEN: unexpected
> {ad283942aff2bba6c0b94ff98a904d1a state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068}
> 2016-02-24 16:34:24,769 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 16:39:24,768 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 16:44:24,768 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 16:45:37,749 DEBUG [FifoRpcScheduler.handler1-thread-10]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 16:49:24,769 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 16:54:24,768 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 16:59:24,768 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 17:04:24,769 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
> 2016-02-24 17:09:24,768 DEBUG
> [dx-common-hmaster1-online,60000,1433937470611-BalancerChore]
> master.HMaster: Not running balancer because 2 region(s) in transition:
> {ad283942aff2bba6c0b94ff98a904d1a={ad283942aff2bba6c0b94ff98a904d1a
> state=SPLITTING_NEW, ts=1456302275610,
> server=dx-common-regionserver1-online,60020,1456302268068},
> ab07d6fbcef39be032ba11ca6ba252ef={ab07d6fbcef39be032ba11ca6ba252ef
> state=SPLITTING_NEW...
>
>
>
>
>
> 2016-02-25 10:05 GMT+08:00 Ted Yu <[email protected]>:
>
>> bq. two regions were in transition
>>
>> Can you pastebin related server logs w.r.t. these two regions so that we
>> can have more clue ?
>>
>> For #2, please see http://hbase.apache.org/book.html#big.cluster.config
>>
>> For #3, please see
>>
>> http://hbase.apache.org/book.html#_running_multiple_workloads_on_a_single_cluster
>>
>> On Wed, Feb 24, 2016 at 3:31 PM, Heng Chen <[email protected]>
>> wrote:
>>
>> > The story is I run one MR job on my production cluster (0.98.6), it
>> needs
>> > to scan one table during map procedure.
>> >
>> > Because of the heavy load from the job, all my RS crashed due to OOM.
>> >
>> > After i restart all RS, i found one problem.
>> >
>> > All regions were reopened on one RS, and balancer could not run
>> because of
>> > two regions were in transition. The cluster got in stuck a long time
>> > until i restarted master.
>> >
>> > 1. why this happened?
>> >
>> > 2. If cluster has a lots of regions, after all RS crash, how to
>> restart
>> > the cluster. If restart RS one by one, it means OOM may happen because
>> one
>> > RS has to hold all regions and it will cost a long time.
>> >
>> > 3. Is it possible to make each table with some requests quotas, it
>> means
>> > when one table is requested heavily, it has no impact to other tables on
>> > cluster.
>> >
>> >
>> > Thanks
>> >
>>
>
>
