pig-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Apache Wiki <wikidi...@apache.org>
Subject [Pig Wiki] Update of "ProposedRoadMap" by francisoud
Date Fri, 25 Jan 2008 16:35:36 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Pig Wiki" for change notification.

The following page has been changed by francisoud:
http://wiki.apache.org/pig/ProposedRoadMap

The comment on the change is:
Adding link to LoggingPolicy

------------------------------------------------------------------------------
     3. A great majority of data queries can be answered using the provided operators.  A
declarative language greatly reduces the development effort needed by users to make use of
grid data.
     4. An interactive shell allows users to easily experiment with their data and queries
in order to shorten their development cycle.
  
- All of this comes at a price in performance and flexibility.  An expert prorammer will always
be able to write more efficient code in a lower level
+ All of this comes at a price in performance and flexibility.  An expert programmer will
always be able to write more efficient code in a lower level
  language to execute a given job than can be done in general purpose higher level language.
 Also, some types of jobs may not fit nicely into pig's query
  model.  For these reasons it is not envisioned that pig should become the only way to access
data on the grid.  However, given sufficient performance,
  stability, and ease of use, the majority of users will find pig an easier way to write,
test, and maintain their code.
@@ -259, +259 @@

  '''Current Situation''':  Most pig progress, debugging, and error information is currently
written to stderr via System.err.println.  Hadoop uses log4j
  to provide trace logging.  Recently (as of pig 1.1d), pig began to use log4j as well.  However,
very few parts of the code have been converted from
  println to log4j.  In addition, pig only has a screen appender for log4j, so it only writes
to stderr.  Pig needs to be generating a log file on the
- front end as well.
+ front end as well. See [LoggingPolicy] for more details.
  
  '''Estimated Development Effort''':  Medium.
  

Mime
View raw message