Examples with LoadPeonCallback org.apache.druid.server.coordinator.LoadPeonCallback used on opensource projects

Example 1 with LoadPeonCallback

use of org.apache.druid.server.coordinator.LoadPeonCallback in project druid by druid-io.

the class BalanceSegments method moveSegment.

protected boolean moveSegment(final BalancerSegmentHolder segment, final ImmutableDruidServer toServer, final DruidCoordinatorRuntimeParams params) {
    final LoadQueuePeon toPeon = params.getLoadManagementPeons().get(toServer.getName());
    final ImmutableDruidServer fromServer = segment.getFromServer();
    final DataSegment segmentToMove = segment.getSegment();
    final SegmentId segmentId = segmentToMove.getId();
    if (!toPeon.getSegmentsToLoad().contains(segmentToMove) && (toServer.getSegment(segmentId) == null) && new ServerHolder(toServer, toPeon).getAvailableSize() > segmentToMove.getSize()) {
        log.debug("Moving [%s] from [%s] to [%s]", segmentId, fromServer.getName(), toServer.getName());
        LoadPeonCallback callback = null;
        try {
            ConcurrentMap<SegmentId, BalancerSegmentHolder> movingSegments = currentlyMovingSegments.get(toServer.getTier());
            movingSegments.put(segmentId, segment);
            callback = () -> movingSegments.remove(segmentId);
            coordinator.moveSegment(params, fromServer, toServer, segmentToMove, callback);
            return true;
        } catch (Exception e) {
            log.makeAlert(e, StringUtils.format("[%s] : Moving exception", segmentId)).emit();
            if (callback != null) {
                callback.execute();
            }
        }
    }
    return false;
}