presto-main/src/main/java/io/prestosql/server/TaskResource.java/TaskResource/abortResults
class TaskResource:    @DELETE
    @Path("{taskId}/results/{bufferId}")
    @Produces(MediaType.APPLICATION_JSON)
    public void abortResults(@PathParam("taskId") TaskId taskId, @PathParam("bufferId") OutputBufferId bufferId, @Context UriInfo uriInfo)
    {
        requireNonNull(taskId, "taskId is null");
        requireNonNull(bufferId, "bufferId is null");

        taskManager.abortTaskResults(taskId, bufferId);
    }