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From Apache Wiki <wikidi...@apache.org>
Subject [Lucene-hadoop Wiki] Update of "Hbase" by JimKellerman
Date Mon, 15 Oct 2007 18:50:44 GMT
Dear Wiki user,

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

The following page has been changed by JimKellerman:

The comment on the change is:
add table of contents, missing links

  = Bigtable-like structured storage for Hadoop HDFS =
- '''NEWS:'''
+ == Table Of Contents ==
+  * [#news News]
+  * [#background Background]
+  * [#rationale Rationale]
+  * [#goals Goals]
+   * [#nongoals Non-Goals]
+  * [#links Project Links]
+  * [#contributors Initial Contributors]
+  * [#comments Comments]
+ [[Anchor(news)]]
+ == NEWS: ==
   * Cluster behavior has been much improved. The master, rather than the splitting region
server host, now rules where the daughter splits are deployed. A simple formula has been added
to spread region load evenly.  Splits have been made near-instantaneous and compaction has
been reworked so neither block updates for extended periods of time. -- ''Added 2007/08/16''
   * Support for row and filter columns.
   * A simple [wiki:Hbase/HbaseShell shell] for manipulating HBase tables contributed by Edward
Yoon. -- ''Added 2007/07/10'''
@@ -24, +37 @@

  See the [https://issues.apache.org/jira/secure/IssueNavigator.jspa?mode=hide&requestId=12311855
HBase section of JIRA] for current set of outstanding issues and recent fixes.
+ [[Anchor(background)]]
  == Background ==
  Google's [http://labs.google.com/papers/bigtable.html Bigtable],
@@ -45, +59 @@

  Iterator can be set up to scan through the key-value pairs for that column 
  given a specific row key.
+ [[Anchor(rationale)]]
  == Rationale ==
  Both Google's GFS and Hadoop's HDFS provide a mechanism to
@@ -55, +70 @@

  Bigtable (and Hbase) provide a means for organizing and efficiently
  accessing these large data sets.
+ [[Anchor(goals)]]
  == Goals ==
  Design (and subsequently implement) a structured storage system as
  similar to Google's Bigtable as possible for the Hadoop environment.
+ [[Anchor(nongoals)]]
  === Non-Goals ===
   * Gratuitous changes that are essentially "re-inventing the wheel" or are the result of
"not invented here".
   * Until the first working version is completed, requests for additional features should
be posted at [wiki:Self:Hbase/HbaseFeatureRequests Hbase Feature Requests] to prevent "feature
creep" or "one plus" requests that are not necessary in an initial release.
   * Premature optimization. Once there is a working version, the system will be profiled
for hot spots.
+ [[Anchor(links)]]
  == Project Links ==
-  * [wiki:Hbase/HbaseArchitecture  Hbase Architecture - a work in progress]
+  * [wiki:Hbase/HbaseArchitecture  Hbase Architecture]
   * [http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/javadoc/org/apache/hadoop/hbase/package-summary.html#package_description
 Getting Started] description hosted inside the HBase javadoc package description.
   * [wiki:Hbase/FAQ FAQ]
+  * [wiki:Hbase/HbaseFeatureRequests Requested New Features]
+  * [wiki:Hbase/UsingBloomFilters Using Bloom Filters]
   * The [wiki:Hbase/HbaseShell HBase Shell home page] describes current state of a basic
HBase shell. Includes links to wiki pages describing future shell developments.
   * [http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/javadoc/org/apache/hadoop/hbase/package-summary.html
HBase API Docs] built as part of Hadoop nightlies
   * [wiki:Hbase/PerformanceEvaluation Tools for evaluating HBase performance and scalability]
   * [wiki:Hbase/RDF RDF]: Notes on HBase as an RDF store.
   * Hbase IRC channel is #hbase at irc.freenode.net.
+ [[Anchor(contributors)]]
  == Initial Contributors ==
    * Mike Cafarella (who wrote the initial code base)
    * JimKellerman [[MailTo(jim AT SPAMFREE powerset DOT com)]]
    * Michael Stack [[MailTo(stack AT SPAMFREE powerset DOT com)]]
+ [[Anchor(comments)]]
  == Comments ==
  Please add comments related to the project goals and process below.

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