### 3. Example

As an example, let us take a gzip compressed CSV file. Without S3 Select, we would need to download, decompress and process the entire CSV to get the data you needed. With Select API, can use a simple SQL expression to return only the data from the CSV you’re interested in, instead of retrieving the entire object. Following Python example shows how to retrieve the first column `Location` from an object containing data in CSV format.

     * The signature field of the SMB is overwritten with the sequence number;
     * The MD5 digest of the MAC signing key + the entire SMB is taken;
     * The first 8 bytes of this are placed in the signature field.
     *
     * @param data
     *            The data.
     * @param offset
     *            The starting offset at which the SMB header begins.
     * @param length

```sh
mc admin trace myminio
```

To trace entire HTTP request

```sh
mc admin trace --verbose myminio
```

To trace entire HTTP request and also internode communication

```sh
mc admin trace --all --verbose myminio
```

## Subnet Health

 */
public enum DirectoryCacheScope {
    /**
     * Cache only direct children of the directory
     */
    IMMEDIATE_CHILDREN,

    /**
     * Cache entire subtree recursively (if supported by server)
     */
    RECURSIVE_TREE,

    /**
     * Cache only file attributes but not content
     */
    METADATA_ONLY,

    /**

            System.arraycopy(buffer, bufferIndex, txn_buf, bufDataStart + dataDisplacement, dataCount);
            bufferIndex += dataCount;
        }

        /* Check to see if the entire transaction has been
         * read. If so call the read methods.
         */

        if (!parametersDone && parameterDisplacement + parameterCount == totalParameterCount) {
            parametersDone = true;

     * @param config the configuration context
     * @param fid the file identifier to monitor
     * @param completionFilter bitmask specifying the types of changes to monitor
     * @param watchTree true to monitor the entire directory tree, false for directory only
     */
    public NtTransNotifyChange(final Configuration config, final int fid, final int completionFilter, final boolean watchTree) {
        super(config, NT_TRANSACT_NOTIFY_CHANGE);

    }

    /**
     * Converts a byte array to a hexadecimal string representation.
     *
     * @param data the byte array to convert
     * @return a hexadecimal string representation of the entire byte array
     */
    public static String toHexString(final byte[] data) {
        return toHexString(data, 0, data.length);
    }

    /**

         *
         * @return the length in bytes of the entire notification response
         */
        public int getLength() {
            return length;
        }

        /**
         * Sets the total length of the notification response.
         *
         * @param length the length in bytes of the entire notification response
         */
        public void setLength(int length) {

    }

    /**
     * Performs MAC signing of the SMB.  This is done as follows.
     * The signature field of the SMB is overwritted with the sequence number;
     * The MD5 digest of the MAC signing key + the entire SMB is taken;
     * The first 8 bytes of this are placed in the signature field.
     *
     * @param data The data.
     * @param offset The starting offset at which the SMB header begins.

        byte[] buffer = new byte[8192]; // Large buffer for long path
        int written = trans2QueryPathInfo.writeParametersWireFormat(buffer, 0);

        // Should write the entire path
        assertTrue(written > longPath.length());

        // Check information level is still correct
        int actualInfoLevel = SMBUtil.readInt2(buffer, 0);
        assertEquals(0x0101, actualInfoLevel);