Re: Strange behavior on filter, group and reduce DataSets

Hi Fabian, any update on this? Did you fix it? Best, Simone. On 22/03/2018 00:24, Fabian Hueske wrote: Hi, That was a bit too early. I found an issue with my approach. Will come back once I solved that. Best, Fabian 2018-03-21 23:45 GMT+01:00 Fabian Hueske >:

Re: Strange behavior on filter, group and reduce DataSets

Hi, Yes, I've updated the PR. It needs a review and should be included in Flink 1.5. Cheers, Fabian simone schrieb am Mo., 26. März 2018, 12:01: > Hi Fabian, > > any update on this? Did you fix it? > > Best, Simone. > > On 22/03/2018 00:24, Fabian Hueske wrote: > > Hi, > > That was a bit too ea

Re: Strange behavior on filter, group and reduce DataSets

Hi, That was a bit too early. I found an issue with my approach. Will come back once I solved that. Best, Fabian 2018-03-21 23:45 GMT+01:00 Fabian Hueske : > Hi, > > I've opened a pull request [1] that should fix the problem. > It would be great if you could try change and report back whether i

Re: Strange behavior on filter, group and reduce DataSets

Hi, I've opened a pull request [1] that should fix the problem. It would be great if you could try change and report back whether it fixes the problem. Thank you, Fabian [1] https://github.com/apache/flink/pull/5742 2018-03-21 9:49 GMT+01:00 simone : > Hi all, > > an update: following Stephan

Re: Strange behavior on filter, group and reduce DataSets

Hi all, an update: following Stephan directives on how to diagnose the issue, making Person immutable, the problem does not occur. Simone. On 20/03/2018 20:20, Stephan Ewen wrote: To diagnose that, can you please check the following:   - Change the Person data type to be immutable (final f

Re: Strange behavior on filter, group and reduce DataSets

To diagnose that, can you please check the following: - Change the Person data type to be immutable (final fields, no setters, set fields in constructor instead). Does that make the problem go away? - Change the Person data type to not be a POJO by adding a dummy fields that is never used, bu

Re: Strange behavior on filter, group and reduce DataSets

Hi Simone and Flavio, I created FLINK-9031 [1] for this issue. Please have a look and add any detail that you think could help to resolve the problem. Thanks, Fabian [1] https://issues.apache.org/jira/browse/FLINK-9031 2018-03-19 16:35 GMT+01:00 simone : > Hi Fabian, > > This simple code repro

Re: Strange behavior on filter, group and reduce DataSets

Hi Fabian, This simple code reproduces the behavior -> https://github.com/xseris/Flink-test-union Thanks, Simone. On 19/03/2018 15:44, Fabian Hueske wrote: Hmmm, I still don't see the problem. IMO, the result should be correct for both plans. The data is replicated, filtered, reduced, and

Re: Strange behavior on filter, group and reduce DataSets

Hmmm, I still don't see the problem. IMO, the result should be correct for both plans. The data is replicated, filtered, reduced, and unioned. There is nothing in between the filter and reduce, that could cause incorrect behavior. The good thing is, the optimizer seems to be fine. The bad thing is

Re: Strange behavior on filter, group and reduce DataSets

Ah, thanks for the update! I'll have a look at that. 2018-03-19 15:13 GMT+01:00 Fabian Hueske : > HI Simone, > > Looking at the plan, I don't see why this should be happening. The pseudo > code looks fine as well. > Any chance that you can create a minimal program to reproduce the problem? > > Th

Re: Strange behavior on filter, group and reduce DataSets

HI Simone, Looking at the plan, I don't see why this should be happening. The pseudo code looks fine as well. Any chance that you can create a minimal program to reproduce the problem? Thanks, Fabian 2018-03-19 12:04 GMT+01:00 simone : > Hi Fabian, > > reuse is not enabled. I attach the plan of

Re: Strange behavior on filter, group and reduce DataSets

Hi, Union is actually a very simple operator (not even an operator in Flink terms). It just merges to inputs. There is no additional logic involved. Therefore, it should also not emit records before either of both ReduceFunctions sorted its data. Once the data has been sorted for the ReduceFunctio

Re: Strange behavior on filter, group and reduce DataSets

Any help on this? This thing is very strange..the "manual" union of the output of the 2 datasets is different than the flink-union of them.. Could it be a problem of the flink optimizer? Best, Flavio On Fri, Mar 16, 2018 at 4:01 PM, simone wrote: > Sorry, I translated the code into pseudocode t

Re: Strange behavior on filter, group and reduce DataSets

Sorry, I translated the code into pseudocode too fast. That is indeed an equals. On 16/03/2018 15:58, Kien Truong wrote: Hi, Just a guest, but string compare in Java should be using equals method, not == operator. Regards, Kien On 3/16/2018 9:47 PM, simone wrote: /subject.getField("fi

Re: Strange behavior on filter, group and reduce DataSets

Hi, Just a guest, but string compare in Java should be using equals method, not == operator. Regards, Kien On 3/16/2018 9:47 PM, simone wrote: /subject.getField("field1") == "";// /