Package org.apache.beam.sdk.io.gcp.bigquery

Enum BigQueryIO.Write.Method

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      DEFAULT
      The default behavior if no method is explicitly set.
      FILE_LOADS
      Use BigQuery load jobs to insert data.
      STORAGE_API_AT_LEAST_ONCE
      Use the new, Storage Write API without exactly once enabled.
      STORAGE_WRITE_API
      Use the new, exactly-once Storage Write API.
      STREAMING_INSERTS
      Use the BigQuery streaming insert API to insert data.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static BigQueryIO.Write.Method valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static BigQueryIO.Write.Method[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.

      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

    • Enum Constant Detail

      • DEFAULT

        public static final BigQueryIO.Write.Method DEFAULT
        The default behavior if no method is explicitly set. If the input is bounded, then file loads will be used. If the input is unbounded, then streaming inserts will be used.

      • FILE_LOADS

        public static final BigQueryIO.Write.Method FILE_LOADS
        Use BigQuery load jobs to insert data. Records will first be written to files, and these files will be loaded into BigQuery. This is the default method when the input is bounded. This method can be chosen for unbounded inputs as well, as long as a triggering frequency is also set using BigQueryIO.Write.withTriggeringFrequency(org.joda.time.Duration). BigQuery has daily quotas on the number of load jobs allowed per day, so be careful not to set the triggering frequency too frequent. For more information, see Loading Data from Cloud Storage. Note: Load jobs currently do not support BigQuery's JSON data type.

      • STREAMING_INSERTS

        public static final BigQueryIO.Write.Method STREAMING_INSERTS
        Use the BigQuery streaming insert API to insert data. This provides the lowest-latency insert path into BigQuery, and therefore is the default method when the input is unbounded. BigQuery will make a strong effort to ensure no duplicates when using this path, however there are some scenarios in which BigQuery is unable to make this guarantee (see https://cloud.google.com/bigquery/streaming-data-into-bigquery). A query can be run over the output table to periodically clean these rare duplicates. Alternatively, using the FILE_LOADS insert method does guarantee no duplicates, though the latency for the insert into BigQuery will be much higher. For more information, see Streaming Data into BigQuery.

      • STORAGE_WRITE_API

        public static final BigQueryIO.Write.Method STORAGE_WRITE_API
        Use the new, exactly-once Storage Write API.

      • STORAGE_API_AT_LEAST_ONCE

        public static final BigQueryIO.Write.Method STORAGE_API_AT_LEAST_ONCE
        Use the new, Storage Write API without exactly once enabled. This will be cheaper and provide lower latency, however comes with the caveat that the output table may contain duplicates.

    • Method Detail

      • values

        public static BigQueryIO.Write.Method[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows: 
        for (BigQueryIO.Write.Method c : BigQueryIO.Write.Method.values())
    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared

      • valueOf

        public static BigQueryIO.Write.Method valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null