Examples with ExecSorterByConnectionCount org.apache.storm.scheduler.resource.strategies.scheduling.sorter.ExecSorterByConnectionCount used on opensource projects

Example 1 with ExecSorterByConnectionCount

use of org.apache.storm.scheduler.resource.strategies.scheduling.sorter.ExecSorterByConnectionCount in project storm by apache.

the class BaseResourceAwareStrategy method prepareForScheduling.

/**
 * Initialize instance variables as the first step in {@link #schedule(Cluster, TopologyDetails)}.
 * This method may be extended by subclasses to initialize additional variables as in
 * {@link ConstraintSolverStrategy#prepareForScheduling(Cluster, TopologyDetails)}.
 *
 * @param cluster on which executors will be scheduled.
 * @param topologyDetails to be scheduled.
 */
protected void prepareForScheduling(Cluster cluster, TopologyDetails topologyDetails) {
    this.cluster = cluster;
    this.topologyDetails = topologyDetails;
    // from Cluster
    this.nodes = new RasNodes(cluster);
    networkTopography = cluster.getNetworkTopography();
    hostnameToNodes = this.nodes.getHostnameToNodes();
    // from TopologyDetails
    topoName = topologyDetails.getName();
    execToComp = topologyDetails.getExecutorToComponent();
    compToExecs = topologyDetails.getComponentToExecutors();
    Map<String, Object> topoConf = topologyDetails.getConf();
    orderExecutorsByProximity = isOrderByProximity(topoConf);
    maxSchedulingTimeMs = computeMaxSchedulingTimeMs(topoConf);
    // From Cluster and TopologyDetails - and cleaned-up
    // all unassigned executors including system components execs
    unassignedExecutors = Collections.unmodifiableSet(new HashSet<>(cluster.getUnassignedExecutors(topologyDetails)));
    int confMaxStateSearch = getMaxStateSearchFromTopoConf(topologyDetails.getConf());
    int daemonMaxStateSearch = ObjectReader.getInt(cluster.getConf().get(DaemonConfig.RESOURCE_AWARE_SCHEDULER_MAX_STATE_SEARCH));
    maxStateSearch = Math.min(daemonMaxStateSearch, confMaxStateSearch);
    LOG.debug("The max state search configured by topology {} is {}", topologyDetails.getId(), confMaxStateSearch);
    LOG.debug("The max state search that will be used by topology {} is {}", topologyDetails.getId(), maxStateSearch);
    searcherState = createSearcherState();
    setNodeSorter(new NodeSorterHostProximity(cluster, topologyDetails, nodeSortType));
    setExecSorter(orderExecutorsByProximity ? new ExecSorterByProximity(topologyDetails) : new ExecSorterByConnectionCount(topologyDetails));
    logClusterInfo();
}