[#873] Give each backend its own compressed schema trees (#881)

Valery Kharseko

yesterday 655132fb059cfa70fb338d54f1bb0fb48198fb0f

 opendj-server-legacy/src/main/java/org/opends/server/backends/pluggable/OnDiskMergeImporter.java

@@ -1629,6 +1629,12 @@
    }

    @Override
    public boolean treeExists(TreeName treeName)
    {
      throw new UnsupportedOperationException();
    }

    @Override
    public long getRecordCount(TreeName treeName)
    {
      throw new UnsupportedOperationException();
@@ -4208,6 +4214,12 @@
    }

    @Override
    public boolean treeExists(TreeName treeName)
    {
      throw new UnsupportedOperationException();
    }

    @Override
    public void openTree(TreeName name, boolean createOnDemand)
    {
      throw new UnsupportedOperationException();