Examples with DistributionRegionAdapter org.bboxdb.distribution.zookeeper.DistributionRegionAdapter used on opensource projects

Example 6 with DistributionRegionAdapter

use of org.bboxdb.distribution.zookeeper.DistributionRegionAdapter in project bboxdb by jnidzwetzki.

the class CreateDistributionGroupHandler method handleRequest.

@Override
public /**
 * Create a new distribution group
 */
boolean handleRequest(final ByteBuffer encodedPackage, final short packageSequence, final ClientConnectionHandler clientConnectionHandler) throws IOException, PackageEncodeException {
    try {
        final CreateDistributionGroupRequest createPackage = CreateDistributionGroupRequest.decodeTuple(encodedPackage);
        final String distributionGroup = createPackage.getDistributionGroup();
        logger.info("Create distribution group: {}", distributionGroup);
        final DistributionGroupAdapter distributionGroupAdapter = ZookeeperClientFactory.getZookeeperClient().getDistributionGroupAdapter();
        final DistributionRegionAdapter distributionRegionAdapter = ZookeeperClientFactory.getZookeeperClient().getDistributionRegionAdapter();
        final List<String> knownGroups = distributionGroupAdapter.getDistributionGroups();
        if (knownGroups.contains(distributionGroup)) {
            logger.error("Untable to create distributon group {}, already exists", distributionGroup);
            final ErrorResponse responsePackage = new ErrorResponse(packageSequence, ErrorMessages.ERROR_DGROUP_EXISTS);
            clientConnectionHandler.writeResultPackage(responsePackage);
            return true;
        }
        distributionGroupAdapter.createDistributionGroup(distributionGroup, createPackage.getDistributionGroupConfiguration());
        final SpacePartitioner spacePartitioner = SpacePartitionerCache.getInstance().getSpacePartitionerForGroupName(distributionGroup);
        final DistributionRegion region = spacePartitioner.getRootNode();
        distributionRegionAdapter.setStateForDistributionRegion(region, DistributionRegionState.ACTIVE);
        clientConnectionHandler.writeResultPackage(new SuccessResponse(packageSequence));
    } catch (Exception e) {
        logger.warn("Error while create distribution group", e);
        final ErrorResponse responsePackage = new ErrorResponse(packageSequence, ErrorMessages.ERROR_EXCEPTION);
        clientConnectionHandler.writeResultPackage(responsePackage);
    }
    return true;
}

Example 7 with DistributionRegionAdapter

use of org.bboxdb.distribution.zookeeper.DistributionRegionAdapter in project bboxdb by jnidzwetzki.

the class RegionSplitter method splitRegion.

/**
 * Perform a distribution region split
 *
 * @param region
 * @param distributionGroupZookeeperAdapter
 * @param spacePartitioner
 * @param diskStorage
 */
public void splitRegion(final DistributionRegion region, final SpacePartitioner spacePartitioner, final TupleStoreManagerRegistry tupleStoreManagerRegistry) {
    assert (region != null);
    final DistributionRegionAdapter distributionRegionZookeeperAdapter = ZookeeperClientFactory.getZookeeperClient().getDistributionRegionAdapter();
    logger.info("Performing split for: {}", region.getIdentifier());
    final boolean setResult = tryToSetToFullSplitting(region, distributionRegionZookeeperAdapter);
    if (!setResult) {
        return;
    }
    boolean splitFailed = false;
    final List<DistributionRegion> destination = new ArrayList<>();
    try {
        final Collection<BoundingBox> samples = SamplingHelper.getSamplesForRegion(region, tupleStoreManagerRegistry);
        final List<DistributionRegion> splitRegions = spacePartitioner.splitRegion(region, samples);
        destination.addAll(splitRegions);
        redistributeDataSplit(region, destination);
        distributionRegionZookeeperAdapter.deleteRegionStatistics(region);
        // Setting the region to split will cause a local data delete (see TupleStoreZookeeperObserver)
        spacePartitioner.splitComplete(region, destination);
    } catch (Throwable e) {
        logger.warn("Got exception during split, retry in a few minutes: " + region.getIdentifier(), e);
        splitFailed = true;
    }
    handleSplitFailed(region, spacePartitioner, splitFailed, destination);
    logger.info("Performing split for: {} is done", region.getIdentifier());
}