Link creation order is tracked both at the file level and at the group level. This was introduced in PR #390 after a discussion in issue #387. However, when accessing groups by their index, using H5Lget_name_by_idx, the default index type and order is used, H5_INDEX_NAME and H5_ITER_NATIVE respectively (see H5Group.cpp).
This is an incomplete solution and appears to retrieve groups in creation order only when the number of child groups is less than 8 (I am unsure why this is). For N > 8, the indexed retrieval order appears arbitrary (yet stable).
To make retrieval and iteration follow creation order, the index type and order in H5Lget_name_by_idx should be H5_INDEX_CRT_ORDER and H5_ITER_INC respectively.
Link creation order is tracked both at the file level and at the group level. This was introduced in PR #390 after a discussion in issue #387. However, when accessing groups by their index, using
H5Lget_name_by_idx, the default index type and order is used,H5_INDEX_NAMEandH5_ITER_NATIVErespectively (see H5Group.cpp).This is an incomplete solution and appears to retrieve groups in creation order only when the number of child groups is less than 8 (I am unsure why this is). For N > 8, the indexed retrieval order appears arbitrary (yet stable).
To make retrieval and iteration follow creation order, the index type and order in
H5Lget_name_by_idxshould beH5_INDEX_CRT_ORDERandH5_ITER_INCrespectively.