* that this will suffice. I have not even benchmarked with different size limits.
         */
        if (validClasses.size() > 1000) {
          validClasses.clear();
        }

        validClasses.add(new WeakReference<Class<? extends Exception>>(exceptionClass));
      }
    }

    /**

Fetching /runner/chunkdocs/metadata to metadata
metadata                                                                                                                                                                       100%  226    16.6KB/s   00:00
sftp>
```

## Advanced options

### Change default FTP port

Default port '8021' can be changed via

```
--ftp="address=:3021"
```

### Change FTP passive port range

    private static final int WITNESS_INTERFACE_VERSION = 1;

    // RPC connection parameters
    private static final int WITNESS_RPC_PORT = 135;
    private static final int WITNESS_RPC_TIMEOUT_MS = 5000;

    // RPC operation numbers
    private static final int WITNESS_REGISTER = 0;
    private static final int WITNESS_UNREGISTER = 1;
    private static final int WITNESS_ASYNC_NOTIFY = 2;

/* jcifs smb client library in Java
 * Copyright (C) 2000  "Michael B. Allen" <jcifs at samba dot org>
 *                     "Paul Walker" <jcifs at samba dot org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *

                                               value="${f:h(numOfThread)}" class="form-control"
                                               min="1" max="1000">
                                    </div>
                                </div>
                                <div class="form-group row">

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String url = (String) dataMap.get(fessConfig.getIndexFieldUrl());
        final StringBuilder buf = new StringBuilder(1000);

        @SuppressWarnings("unchecked")
        final List<String> roleTypeList = (List<String>) dataMap.get(fessConfig.getIndexFieldRole());
        buf.append(url);

     * Maps session+parent URL keys to their corresponding character encodings.
     */
    Map<String, String> parentEncodingMap = Collections.synchronizedMap(new LruHashMap<>(1000));

    /**
     * Gets the Fess configuration instance.
     *
     * @return the Fess configuration object
     */
    FessConfig getFessConfig();

    /**

                                               value="${f:h(crawlingThreadCount)}" class="form-control"
                                               min="1" max="1000">
                                    </div>
                                </div>
                                <div class="form-group row">

            // Large buffer
            byte[] largeBuffer = new byte[10000];
            written = echoRequest.writeBytesWireFormat(largeBuffer, 5000);
            assertEquals(4, written);
            assertEquals(4, SMBUtil.readInt2(largeBuffer, 5000));
        }

        @Test
        @DisplayName("Should maintain thread safety")
        void testThreadSafety() throws InterruptedException {

            final String path = entry.getKey();
            if (servletPath.startsWith(path)) {
                req.setCharacterEncoding(entry.getValue());
                final StringBuilder locationBuf = new StringBuilder(1000);
                final String contextPath = servletContext.getContextPath();
                if (StringUtil.isNotBlank(contextPath) && !"/".equals(contextPath)) {
                    locationBuf.append(contextPath);