Package org.apache.lucene.benchmark.byTask.tasks

Class DeleteByPercentTask

  • All Implemented Interfaces:
    Cloneable
    public class DeleteByPercentTask
extends PerfTask
    Deletes a percentage of documents from an index randomly over the number of documents. The parameter, X, is in percent. EG 50 means 1/2 of all documents will be deleted.

    NOTE: the param is an absolute percentage of maxDoc(). This means if you delete 50%, and then delete 50% again, the 2nd delete will do nothing.

    Parameters:

    • delete.percent.rand.seed - defines the seed to initialize Random (default 1717)

    • Constructor Detail

      • DeleteByPercentTask

        public DeleteByPercentTask​(PerfRunData runData)

    • Method Detail

      • setup

        public void setup()
           throws Exception
        Description copied from class: PerfTask
        Task setup work that should not be measured for that specific task. By default it does nothing, but tasks can implement this, moving work from PerfTask.doLogic() to this method. Only the work done in PerfTask.doLogic() is measured for this task. Notice that higher level (sequence) tasks containing this task would then measure larger time than the sum of their contained tasks.
        Overrides:
        setup in class PerfTask
        Throws:
        Exception

      • setParams

        public void setParams​(String params)
        Description copied from class: PerfTask
        Set the params of this task.
        Overrides:
        setParams in class PerfTask

      • supportsParams

        public boolean supportsParams()
        Description copied from class: PerfTask
        Sub classes that support parameters must override this method to return true.
        Overrides:
        supportsParams in class PerfTask
        Returns:
        true iff this task supports command line params.

      • doLogic

        public int doLogic()
            throws Exception
        Description copied from class: PerfTask
        Perform the task once (ignoring repetitions specification) Return number of work items done by this task. For indexing that can be number of docs added. For warming that can be number of scanned items, etc.
        Specified by:
        doLogic in class PerfTask
        Returns:
        number of work items done by this task.
        Throws:
        Exception