November 2014
Beginner to intermediate
326 pages
7h 4m
English
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Troubleshooting the most frequent HBase errors and their explanations
The following are the places that index information about Hadoop/HBase and other project exceptions, and where we can search for information about Hadoop/HBase errors:
- http://search-hadoop.com
- #hbase on irc.freenode.net
- A mailing list of HBase at http://hbase.apache.org/mail-lists.html
Now, let's see the frequent errors and solutions for these:
For troubleshooting, a log is an excellent place to look into. Now, let's see the default log locations of various daemon processes:
- NameNode:
<hadoop home path>/logs/hadoop-<user>-namenode-<hostname>.log - DataNode:
<hadoop home path>/logs/hadoop-<user>-datanode-<hostname>.log - JobTracker:
<hadoop home path>/logs/hadoop-<user>-jobtracker-<hostname>.log ...
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