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Does participant create new thread to handle state transition messages? -
Helix - [mail # user]
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| ...Thanks Lei.all the thread pools in _executorMap are fixed thread pools, which areunlikely to create threads after initialization._batchMessageExecutorService looks a little suspicious, as it... |
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Author: Bo Liu
, 2018-07-16, 21:09
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Helix UI issue -
Helix - [mail # user]
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| ...Hi Lei,We only got "Error Something happened" as attached to my original email.Attached is the content we obtained by curl"/admin/v2/clusters/realpin-shared/resources/ads_users".Thanks,BoOn ... |
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Author: Bo Liu
, 2018-06-04, 17:31
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Helix UI issue - Helix - [mail # user]
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| ...Hi folks,We have a cluster which hosts several resources.For one of the resource, we get the attached error on Helix UI whenclicking on the resource name to see its partitions. However, we c... |
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Author: Bo Liu ,
2018-06-01, 21:22
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Helix based automated cluster management and recovery for Rocksplicator clusters -
Helix - [mail # user]
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| ...Hi folks,We open sourced our Helix based automated cluster management and recoveryfor Rocksplicator (https://github.com/pinterest/rocksplicator) clusters.If you are building distributed data... |
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Author: Bo Liu
, 2018-06-01, 18:29
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more replicas than configured and unbalanced load? -
Helix - [mail # user]
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| ...Thanks Jiajun, we will try it out!On Thu, May 24, 2018 at 2:53 PM, Wang Jiajun wrote:> Hi Bo,>> The additional replica could be an intermediate state.> For example, if a re... |
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Author: Bo Liu
, 2018-05-24, 21:55
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reduce erros rate during service deploy -
Helix - [mail # user]
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| ...That totally makes sense. Thank you!On Wed, Apr 18, 2018 at 6:49 PM, kishore g wrote:> sorry for not being clear in the previous email. The solution I described> is completely ou... |
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Author: Bo Liu
, 2018-04-19, 02:29
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reduce erros rate during service deploy - Helix - [mail # user]
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| ...We listen to external view changes and compose a config file of shardmapping in our internal format that is used by our clients.Will shutdownInProgress=true in InstanceConfig get reflected i... |
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Author: Bo Liu ,
2018-04-19, 01:25
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reduce erros rate during service deploy - Helix - [mail # user]
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| ...Hi folks,We are running a service managed by Helix. When we rolling restart theservice, we first disable instances through Helix before restarting theservice processes in the hope that the r... |
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Author: Bo Liu ,
2018-04-18, 17:44
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protect a cluster during broad range outage -
Helix - [mail # user]
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| ...Great, thanks a lot!will try it out tomorrow.On Mon, Mar 19, 2018 at 7:30 PM, Lei Xia wrote:> Here is the commit that adds maintenance mode support if you are> interested in the ... |
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Author: Bo Liu
, 2018-03-20, 03:17
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protect a cluster during broad range outage - Helix - [mail # user]
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| ...Hi Lei,I only saw the code that set the maintenance flag. However, I don't see anycode that reads this flag. Would you point me to the code that implementsthe maintenance mode logic?Thanks,B... |
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Author: Bo Liu ,
2018-03-20, 02:09
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protect a cluster during broad range outage - Helix - [mail # user]
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| ...Hi Lei,Thank you so much for the detailed information.We were almost about to implement our own logic to generate ideal state tohandle this disaster case (That's why we were looking at the c... |
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Author: Bo Liu ,
2018-03-20, 01:33
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protect a cluster during broad range outage - Helix - [mail # user]
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| ...Just noticed that we have a cluster config "MAX_OFFLINE_INSTANCES_ALLOWED",which is used inhttps://github.com/apache/helix/blob/master/helix-core/src/main/java/org/apache/helix/controller/st... |
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Author: Bo Liu ,
2018-03-19, 23:07
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protect a cluster during broad range outage - Helix - [mail # user]
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| ...I agree semi-auto is a safer mode for stateful service. But we will have tocompute ideal state by ourselves (either manually triggered or triggered bylive instance change events). That means... |
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Author: Bo Liu ,
2018-03-07, 06:51
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protect a cluster during broad range outage - Helix - [mail # user]
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| ...Hi,We are using delayed rebalancer to manage a Master-Slave cluster.In the event when a large portion of a cluster disconnect from ZK (networkpartition, or service crash due to a bug), helix... |
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Author: Bo Liu ,
2018-03-07, 00:30
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Is there a way to reset an OnlineOffline resource? -
Helix - [mail # user]
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| ...It turned out to be something related to the configuration attached.It starts to go Offline if I remove this configuration before disabling it.On Fri, Feb 16, 2018 at 10:04 AM, Bo Liu ... |
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Author: Bo Liu
, 2018-02-16, 18:14
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Is there a way to reset an OnlineOffline resource? - Helix - [mail # user]
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| ...Yup, "HELIX_ENABLE" : "false" is in the idealstate for the disabledresource. I randomly checked the zk message path for two hosts, and the zknodes didn't exist. When there is no messages, do... |
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Author: Bo Liu ,
2018-02-16, 18:04
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Is there a way to reset an OnlineOffline resource? - Helix - [mail # user]
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| ...We tried to disable it through helix ui and restful api.Yes, I think it's not caused by the delay feature. Because the disabledresource stayed at online state forever.On Feb 16, 2018 08:48, ... |
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Author: Bo Liu ,
2018-02-16, 17:04
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Is there a way to reset an OnlineOffline resource? - Helix - [mail # user]
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| ...We'd like to change all partitions of a resource to Offline state and thenlet Helix to gradually move them to Online state. This will help us easilyrefresh the dataset hosted on the resource... |
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Author: Bo Liu ,
2018-02-16, 15:54
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Throttle at partition level? -
Helix - [mail # user]
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| ...Hi Lei,Yes, we'd like at most one transition for a partition.Besides this, we also need instance and cluster level throttling. Can youtake a look at the configuration I posted above. It didn... |
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Author: Bo Liu
, 2018-02-16, 16:59
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Throttle at partition level? - Helix - [mail # user]
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| ...Your input on how to configure Helix for Throttling is appreciated.On Thu, Feb 15, 2018 at 5:09 PM, Bo Liu wrote:> A related question. Is this the proper way to enable instance and ... |
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Author: Bo Liu ,
2018-02-16, 15:55
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Throttle at partition level? - Helix - [mail # user]
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| ...It can help us simplify Master-Slave state transition.When we bring up a new Slave, we need to set it to replicate from theMaster. If there is a concurrent Master->Slave transition, the t... |
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Author: Bo Liu ,
2018-02-16, 01:33
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Throttle at partition level? - Helix - [mail # user]
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| ...A related question. Is this the proper way to enable instance and clusterlevel throttling?Basically we want to allow up to 100 concurrent state transitions atcluster level and 2 at instance ... |
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Author: Bo Liu ,
2018-02-16, 01:09
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Throttle at partition level? - Helix - [mail # user]
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| ...Hi,Does Helix support throttling state transition at partition level?I only find cluster, resource and instance level throttling as below:public enum ThrottleScope { CLUSTER, RES... |
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Author: Bo Liu ,
2018-02-15, 23:19
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what's the proper way to extract DOMAIN information for each instance from external view? -
Helix - [mail # user]
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| ...Thanks Kishore!On Tue, Feb 13, 2018 at 4:14 PM, kishore g wrote:> InstanceConfig is typically cached on spectator and updated every time it> changes. You might have to add some a... |
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Author: Bo Liu
, 2018-02-14, 05:34
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Topology doesn't work as expected -
Helix - [mail # user]
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| ...Hi Lei,It worked!Thanks,BoOn Tue, Feb 13, 2018 at 8:10 PM, Lei Xia wrote:> Hi, Bo>> Please add "TOPOLOGY_AWARE_ENABLED" : "true" to your clusterConfig and> try... |
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Author: Bo Liu
, 2018-02-14, 05:34
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Topology doesn't work as expected - Helix - [mail # user]
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| ...Hi Helix Team,I am doing some test for the Helix topologyThe cluster configuration is:DELAY_REBALANCE_DISABLE : "false"DELAY_REBALANCE_ENABLE : "true"DELAY_REBALANCE_TIME : "100000"FAULT_ZON... |
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Author: Bo Liu ,
2018-02-13, 22:48
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