Logging in HDInsight - Pro Microsoft HDInsight: Hadoop on Windows - page 187

■ each message in the logs is marked by levels like inFo, error, and so on. this level of verbosity in the error
logs can be controlled using the Log4j framework.

Note

Figure 11-3 shows a screenshot of the Hadoop log files for my democluster .

Figure 11-3. Hadoop Log4j logs

A few of the supporting projects like Hive also support the Log4j framework. They have these logs in their own
log directory similar to Hadoop. Following is a snippet of my Hive server log files running on democluster .

(HiveMetaStore.java:main(2940)) - Starting hive metastore on port 9083
2013-08-16 21:24:32,437 INFO metastore.HiveMetaStore (HiveMetaStore.java:newRawStore(349)) - 0:
Opening raw store with implemenation class:org.apache.hadoop.hive.metastore.ObjectStore
2013-08-16 21:24:32,469 INFO mortbay.log (Slf4jLog.java:info(67)) - Logging to
org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog
2013-08-16 21:24:32,515 INFO metastore.ObjectStore (ObjectStore.java:initialize(206))
- ObjectStore, initialize called
2013-08-16 21:24:32,578 INFO metastore.HiveMetaStore (HiveMetaStore.java:newRawStore(349)) - 0:
Opening raw store with implemenation class:org.apache.hadoop.hive.metastore.ObjectStore
2013-08-16 21:24:32,625 INFO metastore.ObjectStore (ObjectStore.java:initialize(206))
- ObjectStore, initialize called
(HiveMetaStore.java:startMetaStore(3032)) - Starting DB backed MetaStore Server
2013-08-16 21:24:40,090 INFO metastore.HiveMetaStore (HiveMetaStore.java:startMetaStore(3044))
- Started the new metaserver on port [9083]…
2013-08-16 21:24:40,090 INFO metastore.HiveMetaStore (HiveMetaStore.java:startMetaStore(3046))