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Ismaël Mejía commented on BEAM-2404: ------------------------------------ Is this already fixed? > BigQueryIO reading stalls if no data is returned by query > --------------------------------------------------------- > > Key: BEAM-2404 > URL: https://issues.apache.org/jira/browse/BEAM-2404 > Project: Beam > Issue Type: Bug > Components: io-java-gcp > Affects Versions: 2.0.0 > Reporter: Andre > Assignee: Chamikara Jayalath > Priority: Major > Fix For: Not applicable > > > When running a BigQueryIO query that doesn't return any rows (e.g. nothing > has changed in a delta job) the job seems to stall and nothing happens as no > temp files are being written which I think might be what it is waiting for. > Just adding one row to the source table will make the job run through > successfully. > Code: > {code:java} > PCollection <TableRow> rows = p.apply("ReadFromBQ", > BigQueryIO.read() > .fromQuery("SELECT * FROM `myproject.dataset.table`") > .withoutResultFlattening().usingStandardSql()); > {code} > > Log: > {code:java} > Jun 02, 2017 9:00:36 AM > org.apache.beam.sdk.io.gcp.bigquery.BigQueryServicesImpl$JobServiceImpl > startJob > INFO: Started BigQuery job: {jobId=beam_job_batch-query, > projectId=my-project}. > bq show -j --format=prettyjson --project_id=my-project beam_job_batch-query > Jun 02, 2017 9:03:11 AM > org.apache.beam.sdk.io.gcp.bigquery.BigQuerySourceBase executeExtract > INFO: Starting BigQuery extract job: beam_job_batch-extract > Jun 02, 2017 9:03:12 AM > org.apache.beam.sdk.io.gcp.bigquery.BigQueryServicesImpl$JobServiceImpl > startJob > INFO: Started BigQuery job: {jobId=beam_job_batch-extract, > projectId=my-project}. > bq show -j --format=prettyjson --project_id=my-project beam_job_batch-extract > Jun 02, 2017 9:04:06 AM > org.apache.beam.sdk.io.gcp.bigquery.BigQuerySourceBase executeExtract > INFO: BigQuery extract job completed: beam_job_batch-extract > Jun 02, 2017 9:04:08 AM org.apache.beam.sdk.io.FileBasedSource > expandFilePattern > INFO: Matched 1 files for pattern > gs://my-bucket/tmp/BigQueryExtractTemp/ff594d003c6440a1ad84b9e02858b5c6/000000000000.avro > Jun 02, 2017 9:04:09 AM org.apache.beam.sdk.io.FileBasedSource > getEstimatedSizeBytes > INFO: Filepattern > gs://my-bucket/tmp/BigQueryExtractTemp/ff594d003c6440a1ad84b9e02858b5c6/000000000000.avro > matched 1 files with total size 9750 > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)