int deleted = databaseDocumentTx.command(new OCommandSQL("delete from cluster:multipleclusters_2")).execute();
Assert.assertEquals(deleted, 2);
// CHANGE CLASS STRATEGY to BALANCED
databaseDocumentTx.command(new OCommandSQL("alter class multipleclusters clusterselection balanced")).execute();
databaseDocumentTx.reload();
databaseDocumentTx.getMetadata().getSchema().reload();
for (int i = 0; i < 2; ++i) {
new ODocument("multipleclusters").field("num", i).save();
}