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Posted to user@beam.apache.org by Mohil Khare <mo...@prosimo.io> on 2020/07/09 04:53:29 UTC

Unable to read value from state/Unable to fetch data due to token mismatch for key

Hello,

I am using beam java sdk 2.19.0 (with enableStreamingEngine set as true)
and very heavily use stateful beam processing model.
However, sometimes I am seeing the following exception while reading value
from state for a key (Please note : here my key is a POJO where fields
create a kind of composite key. Also I am using AvroCoder for this key):

Caused by: java.util.concurrent.ExecutionException:
org.apache.beam.runners.dataflow.worker.KeyTokenInvalidException: Unable to
fetch data due to token mismatch for key
0ggadot_static@prosimo.ioHaa552bec-25f2-11ea-8705-267acc424a25H9219bdd5-335f-11ea-bd4f-de07a30b09ca
@ OC-AU sydney

   1.
      1. at
      org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
      AbstractFuture.getDoneValue (AbstractFuture.java:531
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=531&project=prosimo>
      )
      2. at
      org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
      AbstractFuture.get (AbstractFuture.java:492
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=492&project=prosimo>
      )
      3. at
      org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
      AbstractFuture$TrustedFuture.get (AbstractFuture.java:83
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=83&project=prosimo>
      )
      4. at
      org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
      ForwardingFuture.get (ForwardingFuture.java:62
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FForwardingFuture.java&line=62&project=prosimo>
      )
      5. atorg.apache.beam.runners.dataflow.worker.
      WindmillStateReader$WrappedFuture.get (WindmillStateReader.java:316
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=316&project=prosimo>
      )
      6. atorg.apache.beam.runners.dataflow.worker.
      WindmillStateInternals$WindmillValue.read (
      WindmillStateInternals.java:385
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateInternals.java&line=385&project=prosimo>
      )

Caused by: org.apache.beam.runners.dataflow.worker.KeyTokenInvalidException:
Unable to fetch data due to token mismatch for key <key>

   1.
      1. atorg.apache.beam.runners.dataflow.worker.
      WindmillStateReader.consumeResponse (WindmillStateReader.java:482
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=482&project=prosimo>
      )
      2. atorg.apache.beam.runners.dataflow.worker.
      WindmillStateReader.startBatchAndBlock (WindmillStateReader.java:420
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=420&project=prosimo>
      )
      3. atorg.apache.beam.runners.dataflow.worker.
      WindmillStateReader$WrappedFuture.get (WindmillStateReader.java:313
      <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=313&project=prosimo>
      )


Any help to fix this issue would be greatly appreciated.

Thanks and Regards
Mohil

Re: Unable to read value from state/Unable to fetch data due to token mismatch for key

Posted by Mohil Khare <mo...@prosimo.io>.

Thanks Reuven for your reply.
Good to know that it is benign.

Regards
Mohil

On Wed, Jul 8, 2020 at 10:19 PM Reuven Lax <re...@google.com> wrote:

> This error should be benign. It often means that ownership of the work
> item was moved to a different worker (possibly caused by autoscaling or
> other source of work rebalancing), so the in-progress work item on that
> worker failed. However the work item will be processed successfully on the
> new worker that owns it. This should not cause a persistent failure.
>
> On Wed, Jul 8, 2020 at 9:53 PM Mohil Khare <mo...@prosimo.io> wrote:
>
>> Hello,
>>
>> I am using beam java sdk 2.19.0 (with enableStreamingEngine set as true)
>> and very heavily use stateful beam processing model.
>> However, sometimes I am seeing the following exception while reading
>> value from state for a key (Please note : here my key is a POJO where
>> fields create a kind of composite key. Also I am using AvroCoder for this
>> key):
>>
>> Caused by: java.util.concurrent.ExecutionException:
>> org.apache.beam.runners.dataflow.worker.KeyTokenInvalidException: Unable to
>> fetch data due to token mismatch for key
>> 0ggadot_static@prosimo.ioHaa552bec-25f2-11ea-8705-267acc424a25H9219bdd5-335f-11ea-bd4f-de07a30b09ca
>> @ OC-AU sydney
>>
>>    1.
>>       1. at
>>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>>       AbstractFuture.getDoneValue (AbstractFuture.java:531
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=531&project=prosimo>
>>       )
>>       2. at
>>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>>       AbstractFuture.get (AbstractFuture.java:492
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=492&project=prosimo>
>>       )
>>       3. at
>>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>>       AbstractFuture$TrustedFuture.get (AbstractFuture.java:83
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=83&project=prosimo>
>>       )
>>       4. at
>>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>>       ForwardingFuture.get (ForwardingFuture.java:62
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FForwardingFuture.java&line=62&project=prosimo>
>>       )
>>       5. atorg.apache.beam.runners.dataflow.worker.
>>       WindmillStateReader$WrappedFuture.get (WindmillStateReader.java:316
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=316&project=prosimo>
>>       )
>>       6. atorg.apache.beam.runners.dataflow.worker.
>>       WindmillStateInternals$WindmillValue.read (
>>       WindmillStateInternals.java:385
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateInternals.java&line=385&project=prosimo>
>>       )
>>
>> Caused by: org.apache.beam.runners.dataflow.worker.KeyTokenInvalidException:
>> Unable to fetch data due to token mismatch for key <key>
>>
>>    1.
>>       1. atorg.apache.beam.runners.dataflow.worker.
>>       WindmillStateReader.consumeResponse (WindmillStateReader.java:482
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=482&project=prosimo>
>>       )
>>       2. atorg.apache.beam.runners.dataflow.worker.
>>       WindmillStateReader.startBatchAndBlock (
>>       WindmillStateReader.java:420
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=420&project=prosimo>
>>       )
>>       3. atorg.apache.beam.runners.dataflow.worker.
>>       WindmillStateReader$WrappedFuture.get (WindmillStateReader.java:313
>>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=313&project=prosimo>
>>       )
>>
>>
>> Any help to fix this issue would be greatly appreciated.
>>
>> Thanks and Regards
>> Mohil
>>
>

Re: Unable to read value from state/Unable to fetch data due to token mismatch for key

Posted by Reuven Lax <re...@google.com>.

This error should be benign. It often means that ownership of the work item
was moved to a different worker (possibly caused by autoscaling or other
source of work rebalancing), so the in-progress work item on that worker
failed. However the work item will be processed successfully on the new
worker that owns it. This should not cause a persistent failure.

On Wed, Jul 8, 2020 at 9:53 PM Mohil Khare <mo...@prosimo.io> wrote:

> Hello,
>
> I am using beam java sdk 2.19.0 (with enableStreamingEngine set as true)
> and very heavily use stateful beam processing model.
> However, sometimes I am seeing the following exception while reading value
> from state for a key (Please note : here my key is a POJO where fields
> create a kind of composite key. Also I am using AvroCoder for this key):
>
> Caused by: java.util.concurrent.ExecutionException:
> org.apache.beam.runners.dataflow.worker.KeyTokenInvalidException: Unable to
> fetch data due to token mismatch for key
> 0ggadot_static@prosimo.ioHaa552bec-25f2-11ea-8705-267acc424a25H9219bdd5-335f-11ea-bd4f-de07a30b09ca
> @ OC-AU sydney
>
>    1.
>       1. at
>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>       AbstractFuture.getDoneValue (AbstractFuture.java:531
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=531&project=prosimo>
>       )
>       2. at
>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>       AbstractFuture.get (AbstractFuture.java:492
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=492&project=prosimo>
>       )
>       3. at
>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>       AbstractFuture$TrustedFuture.get (AbstractFuture.java:83
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FAbstractFuture.java&line=83&project=prosimo>
>       )
>       4. at
>       org.apache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent.
>       ForwardingFuture.get (ForwardingFuture.java:62
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.vendor.guava.v26_0_jre.com.google.common.util.concurrent%2FForwardingFuture.java&line=62&project=prosimo>
>       )
>       5. atorg.apache.beam.runners.dataflow.worker.
>       WindmillStateReader$WrappedFuture.get (WindmillStateReader.java:316
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=316&project=prosimo>
>       )
>       6. atorg.apache.beam.runners.dataflow.worker.
>       WindmillStateInternals$WindmillValue.read (
>       WindmillStateInternals.java:385
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateInternals.java&line=385&project=prosimo>
>       )
>
> Caused by: org.apache.beam.runners.dataflow.worker.KeyTokenInvalidException:
> Unable to fetch data due to token mismatch for key <key>
>
>    1.
>       1. atorg.apache.beam.runners.dataflow.worker.
>       WindmillStateReader.consumeResponse (WindmillStateReader.java:482
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=482&project=prosimo>
>       )
>       2. atorg.apache.beam.runners.dataflow.worker.
>       WindmillStateReader.startBatchAndBlock (WindmillStateReader.java:420
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=420&project=prosimo>
>       )
>       3. atorg.apache.beam.runners.dataflow.worker.
>       WindmillStateReader$WrappedFuture.get (WindmillStateReader.java:313
>       <https://console.cloud.google.com/debug/fromlog?appModule=Dataflow%20Jobs&appVersion=2020-07-02_10_32_35-16490648164981155775&file=org%2Fapache.beam.runners.dataflow.worker%2FWindmillStateReader.java&line=313&project=prosimo>
>       )
>
>
> Any help to fix this issue would be greatly appreciated.
>
> Thanks and Regards
> Mohil
>