Examples with Triple org.apache.hadoop.hbase.util.Triple used on opensource projects

Example 1 with Triple

use of org.apache.hadoop.hbase.util.Triple in project hbase by apache.

the class CatalogJanitor method getMergedRegionsAndSplitParents.

/**
   * Scans hbase:meta and returns a number of scanned rows, and a map of merged
   * regions, and an ordered map of split parents. if the given table name is
   * null, return merged regions and split parents of all tables, else only the
   * specified table
   * @param tableName null represents all tables
   * @return triple of scanned rows, and map of merged regions, and map of split
   *         parent regioninfos
   * @throws IOException
   */
Triple<Integer, Map<HRegionInfo, Result>, Map<HRegionInfo, Result>> getMergedRegionsAndSplitParents(final TableName tableName) throws IOException {
    final boolean isTableSpecified = (tableName != null);
    // TODO: Only works with single hbase:meta region currently.  Fix.
    final AtomicInteger count = new AtomicInteger(0);
    // Keep Map of found split parents.  There are candidates for cleanup.
    // Use a comparator that has split parents come before its daughters.
    final Map<HRegionInfo, Result> splitParents = new TreeMap<>(new SplitParentFirstComparator());
    final Map<HRegionInfo, Result> mergedRegions = new TreeMap<>();
    // This visitor collects split parents and counts rows in the hbase:meta table
    MetaTableAccessor.Visitor visitor = new MetaTableAccessor.Visitor() {

        @Override
        public boolean visit(Result r) throws IOException {
            if (r == null || r.isEmpty())
                return true;
            count.incrementAndGet();
            HRegionInfo info = MetaTableAccessor.getHRegionInfo(r);
            // Keep scanning
            if (info == null)
                return true;
            if (isTableSpecified && info.getTable().compareTo(tableName) > 0) {
                // Another table, stop scanning
                return false;
            }
            if (info.isSplitParent())
                splitParents.put(info, r);
            if (r.getValue(HConstants.CATALOG_FAMILY, HConstants.MERGEA_QUALIFIER) != null) {
                mergedRegions.put(info, r);
            }
            // Returning true means "keep scanning"
            return true;
        }
    };
    // Run full scan of hbase:meta catalog table passing in our custom visitor with
    // the start row
    MetaTableAccessor.scanMetaForTableRegions(this.connection, visitor, tableName);
    return new Triple<>(count.get(), mergedRegions, splitParents);
}

Example 2 with Triple

use of org.apache.hadoop.hbase.util.Triple in project hbase by apache.

the class TestFavoredNodeAssignmentHelper method secondaryAndTertiaryRSPlacementHelper.

private Triple<Map<HRegionInfo, ServerName>, FavoredNodeAssignmentHelper, List<HRegionInfo>> secondaryAndTertiaryRSPlacementHelper(int regionCount, Map<String, Integer> rackToServerCount) {
    Map<HRegionInfo, ServerName> primaryRSMap = new HashMap<HRegionInfo, ServerName>();
    List<ServerName> servers = getServersFromRack(rackToServerCount);
    FavoredNodeAssignmentHelper helper = new FavoredNodeAssignmentHelper(servers, rackManager);
    Map<ServerName, List<HRegionInfo>> assignmentMap = new HashMap<ServerName, List<HRegionInfo>>();
    helper.initialize();
    // create regions
    List<HRegionInfo> regions = new ArrayList<>(regionCount);
    for (int i = 0; i < regionCount; i++) {
        HRegionInfo region = new HRegionInfo(TableName.valueOf(name.getMethodName()), Bytes.toBytes(i), Bytes.toBytes(i + 1));
        regions.add(region);
    }
    // place the regions
    helper.placePrimaryRSAsRoundRobin(assignmentMap, primaryRSMap, regions);
    return new Triple<>(primaryRSMap, helper, regions);
}

Example 3 with Triple

use of org.apache.hadoop.hbase.util.Triple in project hbase by apache.

the class TestInterfaceAudienceAnnotations method findProtoInParamType.

private void findProtoInParamType(Class<?> clazz, List<Triple<Class<?>, Method, Class<?>>> protosParamType) {
    Triple<Class<?>, Method, Class<?>> paramType = new Triple<>();
    Method[] methods = clazz.getMethods();
    paramType.setFirst(clazz);
    for (Method method : methods) {
        if (clazz.isInterface() || method.getModifiers() == Modifier.PUBLIC) {
            if (!isInterfacePrivateMethod(method)) {
                Class<?>[] parameters = method.getParameterTypes();
                for (Class<?> param : parameters) {
                    if (param.getName().contains(HBASE_PROTOBUF)) {
                        paramType.setSecond(method);
                        paramType.setThird(param);
                        protosParamType.add(paramType);
                        break;
                    }
                }
            }
        }
    }
}