Examples with BulkReOpen org.apache.hadoop.hbase.master.BulkReOpen used on opensource projects

Example 1 with BulkReOpen

use of org.apache.hadoop.hbase.master.BulkReOpen in project hbase by apache.

the class MasterDDLOperationHelper method reOpenAllRegions.

/**
   * Reopen all regions from a table after a schema change operation.
   **/
public static boolean reOpenAllRegions(final MasterProcedureEnv env, final TableName tableName, final List<HRegionInfo> regionInfoList) throws IOException {
    boolean done = false;
    LOG.info("Bucketing regions by region server...");
    List<HRegionLocation> regionLocations = null;
    Connection connection = env.getMasterServices().getConnection();
    try (RegionLocator locator = connection.getRegionLocator(tableName)) {
        regionLocations = locator.getAllRegionLocations();
    }
    // Convert List<HRegionLocation> to Map<HRegionInfo, ServerName>.
    NavigableMap<HRegionInfo, ServerName> hri2Sn = new TreeMap<>();
    for (HRegionLocation location : regionLocations) {
        hri2Sn.put(location.getRegionInfo(), location.getServerName());
    }
    TreeMap<ServerName, List<HRegionInfo>> serverToRegions = Maps.newTreeMap();
    List<HRegionInfo> reRegions = new ArrayList<>();
    for (HRegionInfo hri : regionInfoList) {
        ServerName sn = hri2Sn.get(hri);
        // See HBASE-4578 for more information.
        if (null == sn) {
            LOG.info("Skip " + hri);
            continue;
        }
        if (!serverToRegions.containsKey(sn)) {
            LinkedList<HRegionInfo> hriList = Lists.newLinkedList();
            serverToRegions.put(sn, hriList);
        }
        reRegions.add(hri);
        serverToRegions.get(sn).add(hri);
    }
    LOG.info("Reopening " + reRegions.size() + " regions on " + serverToRegions.size() + " region servers.");
    AssignmentManager am = env.getMasterServices().getAssignmentManager();
    am.setRegionsToReopen(reRegions);
    BulkReOpen bulkReopen = new BulkReOpen(env.getMasterServices(), serverToRegions, am);
    while (true) {
        try {
            if (bulkReopen.bulkReOpen()) {
                done = true;
                break;
            } else {
                LOG.warn("Timeout before reopening all regions");
            }
        } catch (InterruptedException e) {
            LOG.warn("Reopen was interrupted");
            // Preserve the interrupt.
            Thread.currentThread().interrupt();
            break;
        }
    }
    return done;
}