slavachernyak commented on a change in pull request #15998:
URL: https://github.com/apache/beam/pull/15998#discussion_r751623781
##########
File path:
sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/BigQueryIO.java
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@@ -2427,6 +2435,22 @@ static String getExtractDestinationUri(String
extractDestinationDir) {
return toBuilder().setAutoSharding(true).build();
}
+ /**
+ * Provides a function which can serve as a source of deterministic unique
ids for each record
+ * to be written, replacing the unique ids generated with the default
scheme. When used with
+ * {@link Method#STREAMING_INSERTS} This also elides the re-shuffle from
the BigQueryIO Write by
+ * using the keys on which the data is grouped at the point at which
BigQueryIO Write is
+ * applied, since the reshuffle is necessary only for the checkpointing of
the default-generated
Review comment:
Acknowledged - good point
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