To get bucket size, get the ideal state and then getBucketSize() on it. If you want to change the bucket size, you may first drop the ideal state and re-create using the new bucket size.
On Mon, Feb 23, 2015 at 3:10 PM, Varun Sharma <[email protected]> wrote: > Also, would changing the bucketSize throw an exception or would it cause > undefined behaviour or would the new bucket size simply be ignored ? This > is assuming the number of partitions remain the same in the > setResourceIdealState call ? > > Thanks ! > Varun > > On Mon, Feb 23, 2015 at 2:45 PM, Varun Sharma <[email protected]> wrote: > >> Cool - thanks - for a pre existing resource, how can we retrieve the >> bucket size - do we need to pull in the whole ideal state and then run a >> getBucketSize() on it ? >> >> On Mon, Feb 23, 2015 at 2:42 PM, Zhen Zhang <[email protected]> wrote: >> >>> bucktSize is the size of each bucket, i.e. the number of partitions >>> each bucket will hold. bucket size can't be changed dynamically. >>> >>> ------------------------------ >>> *From:* Varun Sharma [[email protected]] >>> *Sent:* Monday, February 23, 2015 2:37 PM >>> >>> *To:* [email protected] >>> *Subject:* Re: Bucketized resources not working in Helix 0.6.4 >>> >>> OK - thanks. Btw, is bucket size the number of buckets or is it the >>> size of one bucket ? Also can the bucket size be changed dynamically using >>> setResourceIdealState ? >>> >>> On Mon, Feb 23, 2015 at 1:53 PM, Zhen Zhang <[email protected]> wrote: >>> >>>> Hi Varun, >>>> >>>> The partition number is mainly for calculating the buckets. Partition >>>> name will remain the same. You can always get and build Helix source code >>>> from here: >>>> https://github.com/apache/helix >>>> >>>> Changing the partition naming is not hard, but we need to come up >>>> with a general way to achieve this. We will think about this requirement. >>>> If you have any good idea for this, you can always submit a pull request on >>>> github. >>>> >>>> Thanks, >>>> Jason >>>> ------------------------------ >>>> *From:* Varun Sharma [[email protected]] >>>> *Sent:* Monday, February 23, 2015 12:04 PM >>>> >>>> *To:* [email protected] >>>> *Subject:* Re: Bucketized resources not working in Helix 0.6.4 >>>> >>>> How hard is this to change to '$' - its difficult for us to now >>>> change the partition names now. Is there a place to get the helix 0.6.4 >>>> source code, make changes and built it ? >>>> >>>> Another related question - is the partition number mainly needed for >>>> hashing into the buckets - the partition name would still continue to be >>>> "resource_name_partition_num", right ? >>>> >>>> On Mon, Feb 23, 2015 at 11:52 AM, Zhen Zhang <[email protected]> >>>> wrote: >>>> >>>>> The bucketize logic is expecting partition name following the >>>>> convention {resource_name}_{partition_number}. In your case, you are using >>>>> $ ? >>>>> ------------------------------ >>>>> *From:* Varun Sharma [[email protected]] >>>>> *Sent:* Monday, February 23, 2015 11:48 AM >>>>> >>>>> *To:* [email protected] >>>>> *Subject:* Re: Bucketized resources not working in Helix 0.6.4 >>>>> >>>>> Note that we had to prefix each partition with the resource name >>>>> to make the partitions unique. >>>>> >>>>> On Mon, Feb 23, 2015 at 11:48 AM, Varun Sharma <[email protected]> >>>>> wrote: >>>>> >>>>>> Here is the latest error I am getting: >>>>>> >>>>>> 2015-02-23 19:44:48,153 [controller-pool-0] >>>>>> (TerrapinControllerServiceImpl.java:129) WARN Resource creation failed >>>>>> for >>>>>> $terrapin$data$pinpin_board_join$1424377884722, rolling back. >>>>>> >>>>>> *java.lang.IllegalArgumentException: Could NOT parse partition# >>>>>> (join$1424377884722$0) in >>>>>> $terrapin$data$pinpin_board_join$1424377884722$0* >>>>>> >>>>>> *at >>>>>> org.apache.helix.ZNRecordBucketizer.getBucketName(ZNRecordBucketizer.java:72)* >>>>>> >>>>>> *at >>>>>> org.apache.helix.ZNRecordBucketizer.bucketize(ZNRecordBucketizer.java:105)* >>>>>> >>>>>> at >>>>>> org.apache.helix.manager.zk.ZKHelixDataAccessor.setProperty(ZKHelixDataAccessor.java:110) >>>>>> >>>>>> at >>>>>> org.apache.helix.manager.zk.ZKHelixAdmin.setResourceIdealState(ZKHelixAdmin.java:686) >>>>>> >>>>>> On Mon, Feb 23, 2015 at 10:40 AM, Zhen Zhang <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Not really. The bucketize logic just creates child znode under the >>>>>>> original ideal state, and each of the child znode holds a subset of the >>>>>>> total partitions. >>>>>>> ------------------------------ >>>>>>> *From:* Varun Sharma [[email protected]] >>>>>>> *Sent:* Monday, February 23, 2015 10:37 AM >>>>>>> >>>>>>> *To:* [email protected] >>>>>>> *Subject:* Re: Bucketized resources not working in Helix 0.6.4 >>>>>>> >>>>>>> One other question - would bucketizing add anything to the >>>>>>> partition name - just worried about any special symbols (we use _ and $) >>>>>>> causing issues there ? >>>>>>> >>>>>>> On Mon, Feb 23, 2015 at 10:35 AM, Zhen Zhang <[email protected]> >>>>>>> wrote: >>>>>>> >>>>>>>> Hi Varun, >>>>>>>> >>>>>>>> HelixAdmin#addResource was initially used for adding an empty >>>>>>>> resource only, followed by HelixAdmin#rebalance, which bucketize the >>>>>>>> ideal >>>>>>>> state, so the bucketize logic is missing from addResource. We should >>>>>>>> definitely fix this. We are also considering merging addResource and >>>>>>>> rebalance, since separating them are confusing. For now you may use >>>>>>>> setResourceIdealState as a workaround. >>>>>>>> >>>>>>>> Thanks, >>>>>>>> Zhen >>>>>>>> >>>>>>>> ------------------------------ >>>>>>>> *From:* Varun Sharma [[email protected]] >>>>>>>> *Sent:* Monday, February 23, 2015 10:20 AM >>>>>>>> *To:* [email protected] >>>>>>>> *Subject:* Re: Bucketized resources not working in Helix 0.6.4 >>>>>>>> >>>>>>>> Thanks, Zhen. >>>>>>>> >>>>>>>> What about just calling addResource with an idealState with the >>>>>>>> bucket size - is that expected to not work on its own ? >>>>>>>> >>>>>>>> Varun >>>>>>>> >>>>>>>> On Mon, Feb 23, 2015 at 10:18 AM, Zhen Zhang <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> Hi Varun, >>>>>>>>> >>>>>>>>> Did you do the following? >>>>>>>>> HelixAdmin#addResource() // set bucket size >>>>>>>>> HelixAdmin#setResourceIdealState() // no bucket size >>>>>>>>> >>>>>>>>> When you set the ideal state, you still need set the bucket size >>>>>>>>> in the ideal state. This value will be used to bucketize the ideal >>>>>>>>> state. >>>>>>>>> >>>>>>>>> Thanks, >>>>>>>>> Jason >>>>>>>>> >>>>>>>>> ________________________________________ >>>>>>>>> From: Varun Sharma [[email protected]] >>>>>>>>> Sent: Monday, February 23, 2015 1:51 AM >>>>>>>>> To: [email protected] >>>>>>>>> Subject: Bucketized resources not working in Helix 0.6.4 >>>>>>>>> >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> I am trying to bucketize a resource on Helix 0.6.4 - however, am >>>>>>>>> unable to do so. I am setting the bucketSize in the idealState and >>>>>>>>> using >>>>>>>>> addResource() and setResourceIdealState and it ends up complaining >>>>>>>>> that ZK >>>>>>>>> size of 1M has been exceeded. >>>>>>>>> >>>>>>>>> I also tried using the addResource() api which creates an empty >>>>>>>>> ideal state with a valid bucket size. However, when I tried to set the >>>>>>>>> ideal state on that bucket (this ideal state did not have the bucket >>>>>>>>> size >>>>>>>>> set), it failed as well. >>>>>>>>> >>>>>>>>> Whats the right way to get bucketizing to work ? >>>>>>>>> >>>>>>>>> Thanks ! >>>>>>>>> Varun >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
