[jira] [Created] (BEAM-3766) BigQueryIO - Must specify numFileShards when using FILE_LOADS with unbounded PCollection

["Benjamin BENOIST (JIRA)" <ji...@apache.org>]

Benjamin BENOIST created BEAM-3766:
--------------------------------------

             Summary: BigQueryIO - Must specify numFileShards when using FILE_LOADS with unbounded PCollection
                 Key: BEAM-3766
                 URL: https://issues.apache.org/jira/browse/BEAM-3766
             Project: Beam
          Issue Type: Bug
          Components: io-java-gcp
    Affects Versions: 2.3.0
            Reporter: Benjamin BENOIST
            Assignee: Chamikara Jayalath


Since Beam v2.2 it's possible to use [FILE_LOADS|https://beam.apache.org/documentation/sdks/javadoc/2.2.0/org/apache/beam/sdk/io/gcp/bigquery/BigQueryIO.Write.Method.html#FILE_LOADS]. The documentation states that we have to specify _withTriggeringFrequency_ when using it, but doesn't talk about _withNumFileShards_, whereas if we don't specify it we get the below exception:

{code:java}
Exception in thread "main" java.lang.IllegalArgumentException
        at com.google.common.base.Preconditions.checkArgument(Preconditions.java:108)
        at org.apache.beam.sdk.io.gcp.bigquery.BatchLoads.expandTriggered(BatchLoads.java:209)
        at org.apache.beam.sdk.io.gcp.bigquery.BatchLoads.expand(BatchLoads.java:546)
        at org.apache.beam.sdk.io.gcp.bigquery.BatchLoads.expand(BatchLoads.java:79)
        at org.apache.beam.sdk.Pipeline.applyInternal(Pipeline.java:537)
        at org.apache.beam.sdk.Pipeline.applyTransform(Pipeline.java:472)
        at org.apache.beam.sdk.values.PCollection.apply(PCollection.java:286)
        at org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO$Write.expandTyped(BigQueryIO.java:1550)
        at org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO$Write.expand(BigQueryIO.java:1497)
        at org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO$Write.expand(BigQueryIO.java:980)
        at org.apache.beam.sdk.Pipeline.applyInternal(Pipeline.java:537)
        at org.apache.beam.sdk.Pipeline.applyTransform(Pipeline.java:491)
        at org.apache.beam.sdk.values.PCollection.apply(PCollection.java:299)
        at com.travelaudience.data.job.rtbtobigquery.Main$.main(Main.scala:74)
        at com.travelaudience.data.job.rtbtobigquery.Main.main(Main.scala)
{code}

Either default _numFileShards_ should be used or it should be precised in the documentation that this has to be set.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)