Hello,
I noticed the following line in conf/log4j.properties:
log4j.appender.DRFA.File=${hadoop.log.dir}/${hadoop.log.file}
I noticed that the ${hadoop.log.dir}/${hadoop.log.file} sometimes gets
interpreted as "/", indicating that the 2 hadoop properties there are undefined.
I also noticed that the bin/nutch script defines these two properties while
invoking Nutch, like this:
NUTCH_OPTS="$NUTCH_OPTS -Dhadoop.log.dir=$NUTCH_LOG_DIR"
I assume the idea is that the JVM knows about hadoop.log.dir system property,
and then log4j knows about it, too.
However, it doesn't _always_ work.
That is, when invoking various bin/nutch commands as described in
http://lucene.apache.org/nutch/tutorial8.html , this fails, and the system
attempts to write to "/" which, of course, is a directory, not a file.
On the other hand, I also run Nutch using commands described in
http://wiki.apache.org/nutch/NutchHadoopTutorial , which are slightly
different. I noticed that when I did that, log4j worked as designed - those 2
properties were defined and logging really went to logs/hadoop.log.
I'm not yet familiar enough with all the internals and configs to figure out
what to change to fix this, but can somebody else more familar with the setup
fix this?
Otis
