Method reload

solr/core/src/java/org/apache/solr/core/SolrCore.java:769–797

(ConfigSet coreConfig)

   * inform</code>, this could potentially throw a ConcurrentModificationException
   *
   * @see SolrCoreAware
   */
  public QueryResponseWriter registerResponseWriter(
      String name, QueryResponseWriter responseWriter) {
    return responseWriters.put(name, responseWriter);
  }

  public SolrCore reload(ConfigSet coreConfig) throws IOException {
    // only one reload at a time
    synchronized (getUpdateHandler().getSolrCoreState().getReloadLock()) {
      solrCoreState.increfSolrCoreState();

      // if directory is changing, then don't pass on state
      boolean cloneCoreState = getNewIndexDir().equals(getIndexDir());

      boolean success = false;
      SolrCore core = null;
      try {
        CoreDescriptor cd = new CoreDescriptor(name, getCoreDescriptor());
        cd.loadExtraProperties(); // Reload the extra properties
        core = cloneForReloadCore(cd, coreConfig, cloneCoreState);

        // we open a new IndexWriter to pick up the latest config
        core.getUpdateHandler().getSolrCoreState().newIndexWriter(core, false);

        core.getSearcher(true, false, null, true);
        success = true;
        return core;
      } finally {
        // close the new core on any errors that have occurred.
        if (!success && core != null && core.getOpenCount() > 0) {
          IOUtils.closeQuietly(core);