Constructor Detail

• DefaultOperationQuota

  public DefaultOperationQuota(QuotaLimiter... limiters)

• DefaultOperationQuota

  public DefaultOperationQuota(List<QuotaLimiter> limiters)

  NOTE: The order matters. It should be something like [user, table, namespace, global]

Method Detail

• checkQuota

  public void checkQuota(int numWrites,
                int numReads,
                int numScans)
                  throws ThrottlingException

  Description copied from interface: OperationQuota
  Checks if it is possible to execute the specified operation. The quota will be estimated based on the number of operations to perform and the average size accumulated during time.

  Specified by:

  checkQuota in interface OperationQuota

  Parameters:

  numWrites - number of write operation that will be performed

  numReads - number of small-read operation that will be performed

  numScans - number of long-read operation that will be performed

  Throws:

  ThrottlingException - if the operation cannot be performed

• close

  public void close()

  Description copied from interface: OperationQuota
  Cleanup method on operation completion

  Specified by:

  close in interface OperationQuota

• getReadAvailable

  public long getReadAvailable()

  Specified by:

  getReadAvailable in interface OperationQuota

  Returns:

  the number of bytes available to read to avoid exceeding the quota

• getWriteAvailable

  public long getWriteAvailable()

  Specified by:

  getWriteAvailable in interface OperationQuota

  Returns:

  the number of bytes available to write to avoid exceeding the quota

• addGetResult

  public void addGetResult(Result result)

  Description copied from interface: OperationQuota
  Add a get result. This will be used to calculate the exact quota and have a better short-read average size for the next time.

  Specified by:

  addGetResult in interface OperationQuota

• addScanResult

  public void addScanResult(List<Result> results)

  Description copied from interface: OperationQuota
  Add a scan result. This will be used to calculate the exact quota and have a better long-read average size for the next time.

  Specified by:

  addScanResult in interface OperationQuota

• addMutation

  public void addMutation(Mutation mutation)

  Description copied from interface: OperationQuota
  Add a mutation result. This will be used to calculate the exact quota and have a better mutation average size for the next time.

  Specified by:

  addMutation in interface OperationQuota