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Eugene Kirpichov closed BEAM-2406. ---------------------------------- Resolution: Fixed Fix Version/s: 2.1.0 > NullPointerException when writing an empty table to BigQuery > ------------------------------------------------------------ > > Key: BEAM-2406 > URL: https://issues.apache.org/jira/browse/BEAM-2406 > Project: Beam > Issue Type: Bug > Components: sdk-java-gcp > Affects Versions: 2.0.0 > Reporter: Ben Chambers > Assignee: Reuven Lax > Priority: Minor > Fix For: 2.1.0 > > > Originally reported on Stackoverflow: > https://stackoverflow.com/questions/44314030/handling-empty-pcollections-with-bigquery-in-apache-beam > It looks like if there is no data to write, then WritePartitions will return > a null destination, as explicitly stated in the comments: > https://github.com/apache/beam/blob/v2.0.0/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/WritePartition.java#L126 > But, the ConstantTableDestination doesn't turn that into the constant > destination as the comment promises, instead it returns that `null` > destination: > https://github.com/apache/beam/blob/53c9bf4cd325035fabde192c63652ef6d591b93c/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/DynamicDestinationsHelpers.java#L74 > This leads to a null pointer error here since the `tableDestination` is that > null result from calling `getTable`: > https://github.com/apache/beam/blob/v2.0.0/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/WriteTables.java#L97 -- This message was sent by Atlassian JIRA (v6.4.14#64029)