title: hbase 0.90.5 not started in distributed mode with hadoop 1.0
body: <p>I can't start HMaster :(<br>
  Please help me. Second day about this error</p>
  
  <pre><code>Exception in thread "main" java.lang.RuntimeException: Failed construction of Regionserver: class org.apache.hadoop.hbase.regionserver.HRegionServer
  
  Unable to start master
  </code></pre>
  
  <p>Has already worked well hadoop cluster installation. Wait 30 sec before start hbase.</p>
  
  <p>I followed this tutorial <a href="http://hbase.apache.org/book/example_config.html#d0e2432" rel="nofollow">http://hbase.apache.org/book/example_config.html#d0e2432</a><br>
  Change system configuration in required section ulimit and nproc</p>
  
  <p>Have: 1 master, 4 slaves</p>
  
  <p>Here all diagnostic information</p>
  
  <pre><code>Java java version "1.6.0_26"
  Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
  Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)
  Debian 6.03 Linux slave1 2.6.32-5-amd64
  
  Copy hadoop-core to hbase/lib on each machine
  hduser@slave1:/usr/local/hbase$ ls lib/hadoo*
  lib/hadoop-core-1.0.0.jar
  
  Hbase: hbase-0.90.5
  </code></pre>
  
  <p>DETAILED CONFIGURATION HERE <a href="http://pastie.org/private/hnhpw2jeq7p2njegnuha" rel="nofollow">http://pastie.org/private/hnhpw2jeq7p2njegnuha</a> 
  (unable to put here - cause 2 links limit)</p>