TheNeuralBit commented on issue #22605:
URL: https://github.com/apache/beam/issues/22605#issuecomment-1209581890
I pulled out some data from the exception. Here is the assertion:
```
Unable to match metrics for matcher name: 'ElementCount'
(label_key: 'output_user_name' label_value: 'GroupByKey/Reify-out0').
(label_key: 'original_name' label_value:
'GroupByKey/Reify-out0-ElementCount'). attempted: a value greater than <0>
committed: a value greater than <0>
Unable to match metrics for matcher name: 'MeanByteCount'
(label_key: 'output_user_name' label_value: 'GroupByKey/Reify-out0').
(label_key: 'original_name' label_value:
'GroupByKey/Reify-out0-MeanByteCount'). attempted: a value greater than <0>
committed: a value greater than <0>
Unable to match metrics for matcher name: 'ElementCount'
(label_key: 'output_user_name' label_value:
'GroupByKey/GroupByWindow-out0').
(label_key: 'original_name' label_value:
'GroupByKey/GroupByWindow-out0-ElementCount'). attempted: a value greater than
<0> committed: a value greater than <0>
Unable to match metrics for matcher name: 'MeanByteCount'
(label_key: 'output_user_name' label_value:
'GroupByKey/GroupByWindow-out0').
(label_key: 'original_name' label_value:
'GroupByKey/GroupByWindow-out0-MeanByteCount'). attempted: a value greater
than <0> committed: a value greater than <0>
Unable to match metrics for matcher name: 'ElementCount'
(label_key: 'output_user_name' label_value: 'GroupByKey/Reify-out0').
(label_key: 'original_name' label_value:
'GroupByKey/Reify-out0-ElementCount'). attempted: a value greater than <0>
committed: a value greater than <0>
Unable to match metrics for matcher name: 'MeanByteCount'
(label_key: 'output_user_name' label_value: 'GroupByKey/Reify-out0').
(label_key: 'original_name' label_value:
'GroupByKey/Reify-out0-MeanByteCount'). attempted: a value greater than <0>
committed: a value greater than <0>
```
And here are the actual metrics, with just the "ElementCount" and
"MeanByteCount" items:
```
Actual MetricResults:
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/Map(reify_timestamps)-out0-ElementCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/Map(reify_timestamps)-out0'}),
committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name': 'Create/Impulse-out0-ElementCount',
'output_user_name': 'Create/Impulse-out0'}), committed=1, attempted=1)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Reify-out0',
'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Reify-out0-MeanByteCount'}),
committed=46, attempted=46)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'output_user_name':
'Create/MaybeReshuffle/Reshuffle/AddRandomKeys-out0', 'original_name':
'Create/MaybeReshuffle/Reshuffle/AddRandomKeys-out0-ElementCount'}),
committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name': 'Create/FlatMap(<lambda at
core.py:3481>)-out0-MeanByteCount', 'output_user_name': 'Create/FlatMap(<lambda
at core.py:3481>)-out0'}), committed=14, attempted=14)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/Map(reify_timestamps)-out0-MeanByteCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/Map(reify_timestamps)-out0'}),
committed=27, attempted=27)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/AddRandomKeys-out0-MeanByteCount',
'output_user_name': 'Create/MaybeReshuffle/Reshuffle/AddRandomKeys-out0'}),
committed=19, attempted=19)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name': 'Create/FlatMap(<lambda at
core.py:3481>)-out0-ElementCount', 'output_user_name': 'Create/FlatMap(<lambda
at core.py:3481>)-out0'}), committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'output_user_name': 'Create/Impulse-out0', 'original_name':
'Create/Impulse-out0-MeanByteCount'}), committed=13, attempted=13)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Reify-out0-ElementCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Reify-out0'}),
committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'output_user_name': 'metrics-out0', 'original_name':
'metrics-out0-MeanByteCount'}), committed=14, attempted=14)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/FlatMap(restore_timestamps)-out0',
'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/FlatMap(restore_timestamps)-out0-MeanByteCount'}),
committed=19, attempted=19)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'output_user_name': 'map_to_common_key-out0', 'original_name':
'map_to_common_key-out0-ElementCount'}), committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'output_user_name':
'Create/MaybeReshuffle/Reshuffle/RemoveRandomKeys-out0', 'original_name':
'Create/MaybeReshuffle/Reshuffle/RemoveRandomKeys-out0-ElementCount'}),
committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'output_user_name': 'Create/Map(decode)-out0', 'original_name':
'Create/Map(decode)-out0-MeanByteCount'}), committed=14, attempted=14)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Read-out0-ElementCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Read-out0'}),
committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/FlatMap(restore_timestamps)-out0-ElementCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/FlatMap(restore_timestamps)-out0'}),
committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'output_user_name': 'metrics-out0', 'original_name':
'metrics-out0-ElementCount'}), committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name': 'map_to_common_key-out0-MeanByteCount',
'output_user_name': 'map_to_common_key-out0'}), committed=18, attempted=18)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/RemoveRandomKeys-out0-MeanByteCount',
'output_user_name': 'Create/MaybeReshuffle/Reshuffle/RemoveRandomKeys-out0'}),
committed=14, attempted=14)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Read-out0-MeanByteCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Read-out0'}),
committed=19, attempted=19)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'output_user_name': 'Create/Map(decode)-out0', 'original_name':
'Create/Map(decode)-out0-ElementCount'}), committed=4, attempted=4)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name': 'm_out-out0-ElementCount', 'output_user_name':
'm_out-out0'}), committed=5, attempted=5)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name': 'GroupByKey/Read-out0-ElementCount',
'output_user_name': 'GroupByKey/Read-out0'}), committed=1, attempted=1)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name': 'm_out-out0-MeanByteCount', 'output_user_name':
'm_out-out0'}), committed=15, attempted=15)
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=MeanByteCount),
labels={'original_name': 'GroupByKey/Read-out0-MeanByteCount',
'output_user_name': 'GroupByKey/Read-out0'}), committed=16, attempted=16)
```
Looking at just the first item from the assertion (Reify ElementCount), we
can see there is a corresponding metric result, but both original_name and
output_user_name have a prefix,
`Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/`:
```
E MetricResult(key=MetricKey(step=,
metric=MetricName(namespace=dataflow/v1b3, name=ElementCount),
labels={'original_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Reify-out0-ElementCount',
'output_user_name':
'Create/MaybeReshuffle/Reshuffle/ReshufflePerKey/GroupByKey/Reify-out0'}),
committed=4, attempted=4)
```
Is that what's causing the failure?
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