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Method Details

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  getClassSchema

  public static org.apache.avro.Schema getClassSchema()

  This method supports the Avro framework and is not intended to be called directly by the user.

  Returns:

  The schema for the class.

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  getTableNames

  public List<String> getTableNames()

  List of tables to modify. An asterisk changes the system settings.

  Returns:

  The current value of tableNames.

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  setTableNames

  public AlterWalRequest setTableNames(List<String> tableNames)

  List of tables to modify. An asterisk changes the system settings.

  Parameters:

  tableNames - The new value for tableNames.

  Returns:

  this to mimic the builder pattern.

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  getOptions

  public Map<String,String> getOptions()

  Optional parameters.

  • MAX_SEGMENT_SIZE: Maximum size of an individual segment file.
  • SEGMENT_COUNT: Approximate number of segment files to split the WAL across. Must be at least two.
  • SYNC_POLICY: Maximum size of an individual segment file. Supported values:
    • NONE: Disables the WAL.
    • BACKGROUND: WAL entries are periodically written instead of immediately after each operation.
    • FLUSH: Protects entries in the event of a database crash.
    • FSYNC: Protects entries in the event of an OS crash.
  • FLUSH_FREQUENCY: Specifies how frequently WAL entries are written with background sync. This is a global setting and can only be used with the system options.table_names specifier ’*’.
  • CHECKSUM: If TRUE each entry will be checked against a protective checksum. Supported values:
    • TRUE
    • FALSE
    The default value is TRUE.
  • OVERRIDE_NON_DEFAULT: If TRUE tables with unique WAL settings will be overridden when applying a system level change. Supported values:
    • TRUE
    • FALSE
    The default value is FALSE.
  • RESTORE_SYSTEM_SETTINGS: If TRUE tables with unique WAL settings will be reverted to the current global settings. Cannot be used in conjunction with any other option. Supported values:
    • TRUE
    • FALSE
    The default value is FALSE.
  • PERSIST: If TRUE and a system-level change was requested, the system configuration will be written to disk upon successful application of this request. This will commit the changes from this request and any additional in-memory modifications. Supported values:
    • TRUE
    • FALSE
    The default value is TRUE.

  The default value is an empty Map.

  Returns:

  The current value of options.

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  setOptions

  public AlterWalRequest setOptions(Map<String,String> options)

  Optional parameters.

  • MAX_SEGMENT_SIZE: Maximum size of an individual segment file.
  • SEGMENT_COUNT: Approximate number of segment files to split the WAL across. Must be at least two.
  • SYNC_POLICY: Maximum size of an individual segment file. Supported values:
    • NONE: Disables the WAL.
    • BACKGROUND: WAL entries are periodically written instead of immediately after each operation.
    • FLUSH: Protects entries in the event of a database crash.
    • FSYNC: Protects entries in the event of an OS crash.
  • FLUSH_FREQUENCY: Specifies how frequently WAL entries are written with background sync. This is a global setting and can only be used with the system options.table_names specifier ’*’.
  • CHECKSUM: If TRUE each entry will be checked against a protective checksum. Supported values:
    • TRUE
    • FALSE
    The default value is TRUE.
  • OVERRIDE_NON_DEFAULT: If TRUE tables with unique WAL settings will be overridden when applying a system level change. Supported values:
    • TRUE
    • FALSE
    The default value is FALSE.
  • RESTORE_SYSTEM_SETTINGS: If TRUE tables with unique WAL settings will be reverted to the current global settings. Cannot be used in conjunction with any other option. Supported values:
    • TRUE
    • FALSE
    The default value is FALSE.
  • PERSIST: If TRUE and a system-level change was requested, the system configuration will be written to disk upon successful application of this request. This will commit the changes from this request and any additional in-memory modifications. Supported values:
    • TRUE
    • FALSE
    The default value is TRUE.

  The default value is an empty Map.

  Parameters:

  options - The new value for options.

  Returns:

  this to mimic the builder pattern.

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  getSchema

  public org.apache.avro.Schema getSchema()

  This method supports the Avro framework and is not intended to be called directly by the user.

  Specified by:

  getSchema in interface org.apache.avro.generic.GenericContainer

  Returns:

  The schema object describing this class.

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  get

  public Object get(int index)

  This method supports the Avro framework and is not intended to be called directly by the user.

  Specified by:

  get in interface org.apache.avro.generic.IndexedRecord

  Parameters:

  index - the position of the field to get

  Returns:

  value of the field with the given index.

  Throws:

  IndexOutOfBoundsException

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  put

  public void put(int index, Object value)

  This method supports the Avro framework and is not intended to be called directly by the user.

  Specified by:

  put in interface org.apache.avro.generic.IndexedRecord

  Parameters:

  index - the position of the field to set

  value - the value to set

  Throws:

  IndexOutOfBoundsException

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  equals

  public boolean equals(Object obj)

  Overrides:

  equals in class Object

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  toString

  public String toString()

  Overrides:

  toString in class Object

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  hashCode

  public int hashCode()

  Overrides:

  hashCode in class Object