title: Orientdb blocks on a simple document insert
body: <p>I am totally new to OrientDB so I am trying to tinker with it by simply inserting a document.
  I checked out some documentation and wrote this:</p>
  
  <pre><code>public static void main(String[] args) {
      ODatabaseDocumentTx db = ODatabaseDocumentPool.global().acquire("remote:localhost/petshop", "admin", "admin");
      try {
          db.begin(OTransaction.TXTYPE.OPTIMISTIC);
          ODocument animal = new ODocument("Animal");
          animal.field( "name", "Gaudi" );
          animal.field( "location", "Madrid" );
          animal.save();
          db.commit();
      } finally {
          db.close();
      }
  }
  </code></pre>
  
  <p>Now the document gets inserted, I can check that from the console, but this program just hangs in db.commit();</p>
  
  <p>Here is the thread it hangs on:</p>
  
  <pre><code>"main@1" prio=5 tid=0x1 nid=NA runnable
    java.lang.Thread.State: RUNNABLE
        at java.net.SocketInputStream.socketRead0(SocketInputStream.java:-1)
        at java.net.SocketInputStream.read(SocketInputStream.java:152)
        at java.net.SocketInputStream.read(SocketInputStream.java:122)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
        - locked &lt;0x4ff&gt; (a java.io.BufferedInputStream)
        at java.io.DataInputStream.readInt(DataInputStream.java:387)
        at com.orientechnologies.orient.enterprise.channel.binary.OChannelBinary.readInt(OChannelBinary.java:99)
        at com.orientechnologies.orient.client.remote.OStorageRemote.readCollectionChanges(OStorageRemote.java:1895)
        at com.orientechnologies.orient.client.remote.OStorageRemote.commit(OStorageRemote.java:1099)
        at com.orientechnologies.orient.client.remote.OStorageRemoteThread.commit(OStorageRemoteThread.java:456)
        at com.orientechnologies.orient.core.tx.OTransactionOptimistic.doCommit(OTransactionOptimistic.java:119)
        at com.orientechnologies.orient.core.tx.OTransactionOptimistic.commit(OTransactionOptimistic.java:105)
        at com.orientechnologies.orient.core.db.record.ODatabaseRecordTx.commit(ODatabaseRecordTx.java:142)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:504)
        at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:496)
        at OrientTest.main(OrientTest.java:23)
  </code></pre>
  
  <p>The server blurts out the following warning:</p>
  
  <pre><code>2014-05-29 12:03:17:922 WARN Current implementation of storage does not support sbtree collections [ODatabaseRecordAbstract$1]
  </code></pre>
  
  <p>Am I missing something? I am using orientdb 1.7.</p>