Examples of com.facebook.presto.hive.shaded.org.apache.commons.logging.Log

Package com.facebook.presto.hive.shaded.org.apache.commons.logging

Examples of com.facebook.presto.hive.shaded.org.apache.commons.logging.Log

com.facebook.presto.hive.shaded.org.apache.commons.logging.Log
A simple logging interface abstracting logging APIs. In order to be instantiated successfully by {@link LogFactory}, classes that implement this interface must have a constructor that takes a single String parameter representing the "name" of this Log.

The six logging levels used by Log are (in order):
1. trace (the least serious)
2. debug
3. info
4. warn
5. error
6. fatal (the most serious)
The mapping of these log levels to the concepts used by the underlying logging system is implementation dependent. The implementation should ensure, though, that this ordering behaves as expected.

Performance is often a logging concern. By examining the appropriate property, a component can avoid expensive operations (producing information to be logged).

For example,
```
 if (log.isDebugEnabled()) { ... do something expensive ... log.debug(theResult); } 
```
Configuration of the underlying logging system will generally be done external to the Logging APIs, through whatever mechanism is supported by that system.

Please note that this interface is identical to that found in JCL 1.1.1.
@author Scott Sanders @author Rod Waldhoff @version $Id: Log.java,v 1.19 2004/06/06 21:16:04 rdonkin Exp $

  /**
   * initialize or retrieve console object for SessionState.
   */
  public static LogHelper getConsole() {
    if (_console == null) {
      Log LOG = LogFactory.getLog("SessionState");
      _console = new LogHelper(LOG);
    }
    return _console;
  }

View Full Code Here

   * 
   * @exception LogConfigurationException
   *              if a suitable <code>Log</code> instance cannot be returned
   */
  public Log getInstance(String name) throws LogConfigurationException {
    Log instance = null;
    // protect against concurrent access of loggerMap
    synchronized (loggerMap) {
      instance = (Log) loggerMap.get(name);
      if (instance == null) {
        Logger logger = LoggerFactory.getLogger(name);

View Full Code Here

  /**
   * initialize or retrieve console object for SessionState.
   */
  public static LogHelper getConsole() {
    if (_console == null) {
      Log LOG = LogFactory.getLog("SessionState");
      _console = new LogHelper(LOG);
    }
    return _console;
  }

View Full Code Here

      BasicConfigurator.configure(new NullAppender());
    } else {
      setupChildLog4j(conf);
    }


    Log LOG = LogFactory.getLog(ExecDriver.class.getName());
    LogHelper console = new LogHelper(LOG, isSilent);


    if (planFileName == null) {
      console.printError("Must specify Plan File Name");
      printUsage();

View Full Code Here

    if (jobConfFileName != null) {
      conf.addResource(new Path(jobConfFileName));
    }
    HiveConf hiveConf = new HiveConf(conf, BlockMergeTask.class);


    Log LOG = LogFactory.getLog(BlockMergeTask.class.getName());
    boolean isSilent = HiveConf.getBoolVar(conf,
        HiveConf.ConfVars.HIVESESSIONSILENT);
    LogHelper console = new LogHelper(LOG, isSilent);


    // print out the location of the log file for the user so

View Full Code Here

    if (jobConfFileName != null) {
      conf.addResource(new Path(jobConfFileName));
    }
    HiveConf hiveConf = new HiveConf(conf, PartialScanTask.class);


    Log LOG = LogFactory.getLog(PartialScanTask.class.getName());
    boolean isSilent = HiveConf.getBoolVar(conf,
        HiveConf.ConfVars.HIVESESSIONSILENT);
    LogHelper console = new LogHelper(LOG, isSilent);


    // print out the location of the log file for the user so

View Full Code Here

      BasicConfigurator.configure(new NullAppender());
    } else {
      setupChildLog4j(conf);
    }


    Log LOG = LogFactory.getLog(ExecDriver.class.getName());
    LogHelper console = new LogHelper(LOG, isSilent);


    if (planFileName == null) {
      console.printError("Must specify Plan File Name");
      printUsage();

View Full Code Here

    if (jobConfFileName != null) {
      conf.addResource(new Path(jobConfFileName));
    }
    HiveConf hiveConf = new HiveConf(conf, PartialScanTask.class);


    Log LOG = LogFactory.getLog(PartialScanTask.class.getName());
    boolean isSilent = HiveConf.getBoolVar(conf,
        HiveConf.ConfVars.HIVESESSIONSILENT);
    LogHelper console = new LogHelper(LOG, isSilent);


    // print out the location of the log file for the user so

View Full Code Here

    if (jobConfFileName != null) {
      conf.addResource(new Path(jobConfFileName));
    }
    HiveConf hiveConf = new HiveConf(conf, BlockMergeTask.class);


    Log LOG = LogFactory.getLog(BlockMergeTask.class.getName());
    boolean isSilent = HiveConf.getBoolVar(conf,
        HiveConf.ConfVars.HIVESESSIONSILENT);
    LogHelper console = new LogHelper(LOG, isSilent);


    // print out the location of the log file for the user so

View Full Code Here

  /**
   * initialize or retrieve console object for SessionState.
   */
  public static LogHelper getConsole() {
    if (_console == null) {
      Log LOG = LogFactory.getLog("SessionState");
      _console = new LogHelper(LOG);
    }
    return _console;
  }

View Full Code Here

TOP

Related Classes of com.facebook.presto.hive.shaded.org.apache.commons.logging.Log

com.facebook.presto.hive.shaded.org.apache.commons.logging.impl.SLF4JLogFactory

org.apache.hadoop.hive.ql.exec.mr.ExecDriver

org.apache.hadoop.hive.ql.io.rcfile.merge.BlockMergeTask

org.apache.hadoop.hive.ql.io.rcfile.stats.PartialScanTask

org.apache.hadoop.hive.ql.session.SessionState

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.