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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Trivial Update of "Hbase/FAQ" by stack
Date Tue, 18 Mar 2008 22:11:10 GMT
Dear Wiki user,

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The following page has been changed by stack:

The comment on the change is:
FAQ on ports.

   1. [#5 How do I enable hbase DEBUG-level logging?]
   1. [#6 Why do I see "java.io.IOException...(Too many open files)" in my logs?]
   1. [#7 What can I do to improve hbase performance?]
-  1. [#8 How do I access Hbase from my Ruby/Python/Perl/PHP/etc. application?]
+  1. [#8 How do I access HBase from my Ruby/Python/Perl/PHP/etc. application?]
   1. [#9 How do I create a table with a column family named "count" (or some other HQL reserved
   1. [#10 How do cell deletes work?]
+  1. [#11 What ports does HBase use?]
  == Answers ==
@@ -106, +107 @@

  There is nothing to stop you adding deletes or puts with timestamps that are from the far
future or of the distant past but doing so is likely to get you into trouble; its a known
issue that hbase currently does not do the necessary work checking all stores to see if an
old store has an entry that should override additions made recently.
+ '''11. [[Anchor(11)]] What ports does HBase use?'''
+ Not counting the ports used by hadoop -- hdfs and mapreduce -- by default, hbase runs the
master and its informational http server at 60000 and 60010 respectively and regionservers
at 60020 and their informational http server at 60030.  ''${HBASE_HOME}/conf/hbase-default.xml''
lists the default values of all ports used.  Also check ''${HBASE_HOME}/conf/hbase-site.xml''
for site-specific overrides. 

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