Program: 38698
Project: 38698
Buggy source:
public void test() throws IOException, SQLException {
  IDatabases dbs=new DatabasesImpl(DATABASE_CONNECTION1);
  IUserPersistence users=dbs.getDatabase1().users();
  ICommentPersistence comments=dbs.getDatabase1().comments();
  users.deleteAll();
  comments.deleteAll();
  User userA=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(10);
  User userB=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(30);
  User userC=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(20);
  User userD=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(40);
  userA.save();
  userB.save();
  userC.save();
  userD.save();
  Comment commentA=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userA.getId())).setContent("String_Node_Str");
  Comment commentB=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userB.getId())).setContent("String_Node_Str");
  Comment commentC=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userB.getId())).setContent("String_Node_Str");
  Comment commentD=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userC.getId())).setContent("String_Node_Str");
  Comment commentE=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userD.getId())).setContent("String_Node_Str");
  commentA.save();
  commentB.save();
  commentC.save();
  commentD.save();
  commentE.save();
  List<Map<ModelField,Object>> results=GenericQuery.create(DATABASE_CONNECTION1).from(User.class).join(Comment.class,User.id(),Comment.commenter_id()).where(User.bio(),in(Sets.newHashSet("String_Node_Str","String_Node_Str","String_Node_Str"))).where(Comment.content(),isNotNull()).orderBy(User.num_posts(),DESC).orderBy(Comment.id()).select(User.id(),User.bio(),User.handle(),User.num_posts(),Comment.id(),Comment.commenter_id(),Comment.content()).fetch();
  for (  Map<ModelField,Object> record : results) {
    System.out.println(record.toString());
  }
}

Fixed version (ground truth):
public void test() throws IOException, SQLException {
  IDatabases dbs=new DatabasesImpl(DATABASE_CONNECTION1);
  IUserPersistence users=dbs.getDatabase1().users();
  ICommentPersistence comments=dbs.getDatabase1().comments();
  users.deleteAll();
  comments.deleteAll();
  User userA=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(10);
  User userB=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(30);
  User userC=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(20);
  User userD=users.createDefaultInstance().setHandle("String_Node_Str").setBio("String_Node_Str").setNumPosts(40);
  userA.save();
  userB.save();
  userC.save();
  userD.save();
  Comment commentA=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userA.getId())).setContent("String_Node_Str");
  Comment commentB=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userB.getId())).setContent("String_Node_Str");
  Comment commentC=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userB.getId())).setContent("String_Node_Str");
  Comment commentD=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userC.getId())).setContent("String_Node_Str");
  Comment commentE=comments.createDefaultInstance().setCommenterId(ModelWithId.safeLongToInt(userD.getId())).setContent("String_Node_Str");
  commentA.save();
  commentB.save();
  commentC.save();
  commentD.save();
  commentE.save();
  List<Map<ModelField,Object>> results=GenericQuery.create(DATABASE_CONNECTION1).from(User.class).leftJoin(Comment.class,User.id(),Comment.commenter_id()).where(User.bio(),in(Sets.newHashSet("String_Node_Str","String_Node_Str","String_Node_Str"))).where(Comment.content(),isNotNull()).orderBy(User.num_posts(),DESC).orderBy(Comment.id()).select(User.id(),User.bio(),User.handle(),User.num_posts(),Comment.id(),Comment.commenter_id(),Comment.content()).fetch();
  for (  Map<ModelField,Object> record : results) {
    System.out.println(record.toString());
  }
}