Re: How to get latency info from benchmark

Posted by Eric Fukuda on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/How-to-get-latency-info-from-benchmark-tp8642p8878.html

Thanks Robert,

I tried to checkout the commit you mentioned, but git returns an error "fatal: reference if not a tree: 547e7490fb99562ca15a2127f0ce1e784db97f3e". I've searched for a solution but could not find any. Am I doing something wrong?

-----------------

$ git clone https://github.com/rmetzger/flink.git

Cloning into 'flink'...

remote: Counting objects: 321185, done.

remote: Compressing objects: 100% (3/3), done.

remote: Total 321185 (delta 1), reused 0 (delta 0), pack-reused 321182

Receiving objects: 100% (321185/321185), 93.60 MiB | 10.63 MiB/s, done.

Resolving deltas: 100% (141424/141424), done.

Checking connectivity... done.

$ cd flink/

$ git checkout 547e7490fb99562ca15a2127f0ce1e784db97f3e

fatal: reference is not a tree: 547e7490fb99562ca15a2127f0ce1e784db97f3e

------------------

Regards,

Eric

On Fri, Sep 2, 2016 at 12:01 PM, Robert Metzger <[hidden email]> wrote:

Hi Eric,

I'm sorry that you are running into these issues. I think the version is 0.10-SNAPSHOT, and I think I've used this commit: https://github.com/rmetzger/flink/commit/547e749 for some of the runs (of the throughput / latency tests, not for the yahoo benchmark). The commit should at least point to the right point in time.

Note that these benchmarks are pretty old by now, and the performance characteristics have probably changed in Flink 1.1 because we've put a lot of effort into optimizing Flink for common streaming use cases.

Regards,

Robert

On Fri, Sep 2, 2016 at 5:09 PM, Eric Fukuda <[hidden email]> wrote:

Hi Robert,

I've been trying to build the "performance" project using various versions of Flink, but failing. It seems that I need both KafkaZKStringSerializer class and FlinkKafkaConsumer082 class to build the project, but none of the branches has both of them. KafkaZKStringSerializer existed in 0.9.0-x branches but deleted in 0.9.1-x branches, and FlinkKafkaConsumer082 goes the other way, therefore they don't exist in a same branch. I'm guessing you were using a snapshot somewhere between 0.9.0 and 0.9.1. Could you tell me the SHA you were using?

Regards,

Eric

On Wed, Aug 24, 2016 at 4:57 PM, Robert Metzger <[hidden email]> wrote:

Hi,

Version 0.10-SNAPSHOT is pretty old. The snapshot repository of Apache probably doesn't keep old artifacts around forever.

Maybe you can migrate the tests to Flink 0.10.0, or maybe even to a higher version.

Regards,

Robert

On Wed, Aug 24, 2016 at 10:32 PM, Eric Fukuda <[hidden email]> wrote:

Hi Max, Robert,

Thanks for the advice. I'm trying to build the "performance" project, but failing with the following error. Is there a solution for this?

[ERROR] Failed to execute goal on project streaming-state-demo: Could not resolve dependencies for project com.dataartisans.flink:streaming-state-demo:jar:1.0-SNAPSHOT: Failure to find org.apache.flink:flink-connector-kafka-083:jar:0.10-SNAPSHOT in https://repository.apache.org/content/repositories/snapshots/ was cached in the local repository, resolution will not be reattempted until the update interval of apache.snapshots has elapsed or updates are forced -> [Help 1]

On Wed, Aug 24, 2016 at 8:12 AM, Robert Metzger <[hidden email]> wrote:

Hi Eric,

Max is right, the tool has been used for a different benchmark [1]. The throughput logger that should produce the right output is this one [2].

Very recently, I've opened a pull request for adding metric-measuring support into the engine [3]. Maybe that's helpful for your experiments.

[1] http://data-artisans.com/high-throughput-low-latency-and-exactly-once-stream-processing-with-apache-flink/

[2] https://github.com/dataArtisans/performance/blob/master/flink-jobs/src/main/java/com/github/projectflink/streaming/Throughput.java#L203

[3] https://github.com/apache/flink/pull/2386

On Wed, Aug 24, 2016 at 2:04 PM, Maximilian Michels <[hidden email]> wrote:

I believe the AnaylzeTool is for processing logs of a different benchmark.

CC Jamie and Robert who worked on the benchmark.

On Wed, Aug 24, 2016 at 3:25 AM, Eric Fukuda <[hidden email]> wrote:
> Hi,
>
> I'm trying to benchmark Flink without Kafka as mentioned in this post
> (http://data-artisans.com/extending-the-yahoo-streaming-benchmark/). After
> running flink.benchmark.state.AdvertisingTopologyFlinkState with
> user.local.event.generator in localConf.yaml set to 1, I ran
> flink.benchmark.utils.AnalyzeTool giving
> flink-1.0.1/log/flink-[username]-jobmanager-0-[servername].log as a
> command-line argument. I got the following output and it does not have the
> information about the latency.
>
>
> ================= Latency (0 reports ) =====================
> ================= Throughput (1 reports ) =====================
> ====== null (entries: 10150)=======
> Mean throughput 639078.5018497099
> Exception in thread "main" java.lang.IndexOutOfBoundsException: toIndex = 2
>         at java.util.ArrayList.subListRangeCheck(ArrayList.java:962)
>         at java.util.ArrayList.subList(ArrayList.java:954)
>         at flink.benchmark.utils.AnalyzeTool.main(AnalyzeTool.java:133)
>
>
> Reading the code in AnalyzeTool.java, I found that it's looking for lines
> that include "Latency" in the log file, but apparently it's not finding any.
> I tried grepping the log file, and couldn't find any either. I have one
> server that runs both JobManager and Task Manager and another server that
> runs Redis, and they are connected through a network with each other.
>
> I think I have to do something to read the data stored in Redis before
> running AnalyzeTool, but can't figure out what. Does anyone know how to get
> the latency information?
>
> Thanks,
> Eric