1. Implementing large scale log file analytics stackoverflow.comCan anyone point me to a reference or provide a high level overview of how companies like Facebook, Yahoo, Google, etc al perform the large scale (e.g. multi-TB range) log analysis ... |
2. Configuring Hadoop logging to avoid too many log files stackoverflow.comI'm having a problem with Hadoop producing too many log files in $HADOOP_LOG_DIR/userlogs (the Ext3 filesystem allows only 32000 subdirectories) which looks like the same problem in this question: http://stackoverflow.com/questions/2091287/error-in-hadoop-mapreduce My ... |
3. Storage of parsed log data in hadoop and exporting it into relational DB stackoverflow.comI have a requirement of parsing both Apache access logs and tomcat logs one after another using map reduce. Few fields are being extracted from tomcat log and rest from Apache ... |
4. The logs doesn't appear in the console :( [Hadoop Question] stackoverflow.comI am trying to debug the WordCount example of Cloudera Hadoop but I can't. I've logged the mapper and the reducer class, but in the console doesn't appear the log. I attach ... |
5. Hadoop enable logging stackoverflow.comI am trying to work with hadoop built from source in a single cluster mode.I checked out 0.22.0-alpha-1.I am facing few problems with logging. How do i enable debug logs. I tried adding |
6. How to get the logs for a Hadoop RunningJob? stackoverflow.comI start a job on a Hadoop cluster using JobClient, which gives me a handle to a RunningJob. Is there a painless way to get the log output of just that ... |
7. Importing multi-level directories of logs in hadoop/pig stackoverflow.comWe store our logs in S3, and one of our (Pig) queries would grab three different log types. Each log type is in sets of subdirectories based upon type/date. For instance: |
8. extract Similar users from logs using hadoop/pig stackoverflow.comWe need as part of our start-up product to compute "similar user feature". And we've decided to go with pig for it. I've been learning pig for a few days now and ... |
9. in hadoop how to log information to a single log file stackoverflow.comI am looking for a way to store some log information into a single log file in HDFS. That is different workers in Hadoop will dump the log information into a ... |
10. Controlling the size of log file generated by flume itself stackoverflow.comFlume generates log in /var/log/flume folder. The files there are growing in GBs. How to limit the file size for these logs? |
11. Conditional sum over data using Apache Pig Latin stackoverflow.comI'm trying to do some log processing using Apache Pig Latin, and I was wondering if there was an easier way to do this: |
12. How to log messages from Hadoop? stackoverflow.comHow can I log messages from Hadoop Mapper (or Combiner/Reducer/whatever) so that I'd find these custom messages in Hadoop logs later? |
13. Hadoop log streaming stackoverflow.comI was writing shell script that will run many hadoop jobs (possibly overnight) for performance purposes. I don't know how to tell Hadoop to write each map and reduce log information ... |
14. How can I configure hadoop mapreduce so that the log of my mapreduce class can output to a file? stackoverflow.comI modified the $HADOOP_HOME/conf/log4j.properies But it is not working as what I expect. How to solve this problem? |
15. how to suppress Hadoop logging message on the console stackoverflow.comThese are the Hadoop Logging Message I was trying to surpress |
16. Hadoop MapReduce intermediate output stackoverflow.comIs there a way to output to log the intermediate (Map Phase) output of a MapReduce Job without editing the Application? (The application is not mine, but the cluster is, and ... |
17. Flume to hdfs writing stackoverflow.comI need to write some data to HDFS file system using flume. How this is possible. I am using ubuntu 11.10 thnx |