langgraph up with syntax errors creates dangling Docker images (and eats up available disk)

[ewalker11]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangGraph/LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangGraph/LangChain rather than my code.
• I am sure this is better as an issue rather than a GitHub discussion, since this is a LangGraph bug and not a design question.

Example Code

from typing import Any, Dict, List, Optional
from pydantic import BaseModel
from langgraph.graph import StateGraph, START, END


class State(BaseModel):
    string_default: Optional[str] = None
    int_default: Optional[int] = None
    float_default: Optional[float] = None
    dict_default: Optional[Dict[str, Any]] = None
    list_default: Optional[List[str]] = None


def node(state: State):
    return {
        'string_default': state.string_default,
        'int_default': state.int_default,
        'float_default': state.float_default,
        'dict_default': state.dict_default,
        'list_default': state.list_default,
    }


graph_builder = StateGraph(State)
graph_builder.add_node("default", node)
graph_builder.add_edge(START, "syntax_error")
graph_builder.add_edge("default", END)

graph = graph_builder.compile()

Error Message and Stack Trace (if applicable)

Doing this enough times will result in Docker errors like:

failed to solve: failed to copy files: userspace copy failed: write /var/lib/docker/overlay2/f89z6c11ya4bjzmal3lonj3tk/merged/deps/[repo]/.env.dev: no space left on device

Description

Initial state

> docker system df           
TYPE            TOTAL     ACTIVE    SIZE      RECLAIMABLE
Images          0         0         0B        0B
Containers      0         0         0B        0B
Local Volumes   0         0         0B        0B
Build Cache     0         0         0B        0B

Amend graph code to have one syntax error and langgraph up

> docker system df
TYPE            TOTAL     ACTIVE    SIZE      RECLAIMABLE
Images          3         2         1.042GB   257.3MB (24%)
Containers      2         0         5.002MB   5.002MB (100%)
Local Volumes   1         1         40.85MB   0B (0%)
Build Cache     21        0         98.84MB   98.84MB

Amend graph code to have a different syntax error and langgraph

> docker system df
docker system df          
TYPE            TOTAL     ACTIVE    SIZE      RECLAIMABLE
Images          4         2         1.143GB   685.5MB (59%)
Containers      2         0         5.002MB   5.002MB (100%)
Local Volumes   1         1         40.85MB   0B (0%)
Build Cache     25        0         98.84MB   98.84MB

Doing a verbose df reveals that dangling images are not being cleaned up:

docker system df --verbose
 Images space usage:

REPOSITORY                        TAG       IMAGE ID       CREATED         SIZE      SHARED SIZE   UNIQUE SIZE   CONTAINERS
ewalker-langgraph-langgraph-api   latest    ad138f07385a   4 minutes ago   686MB     584.1MB       101.4MB       1
<none>                            <none>    bfe00bd0a94c   4 minutes ago   686MB     584.1MB       101.4MB       0
<none>                            <none>    46d4c46c4981   6 minutes ago   686MB     584.1MB       101.4MB       0
langchain/langgraph-api           3.11      799a89355392   17 hours ago    257MB     257.3MB       0B            0
postgres                          16        35042a754d27   6 days ago      453MB     97.11MB       356.3MB       1
...

System Info

System Information

OS: Darwin
OS Version: Darwin Kernel Version 23.5.0: Wed May 1 20:17:33 PDT 2024; root:xnu-10063.121.3~5/RELEASE_ARM64_T6031
Python Version: 3.12.3 (main, May 28 2024, 11:22:04) [Clang 15.0.0 (clang-1500.3.9.4)]

Package Information

langchain_core: 0.2.28
langchain: 0.2.12
langchain_community: 0.2.11
langsmith: 0.1.96
langchain_anthropic: 0.1.22
langchain_openai: 0.1.20
langchain_text_splitters: 0.2.2
langgraph: 0.2.2

Packages not installed (Not Necessarily a Problem)

The following packages were not found:

langserve

[Deadsec69]

hi @ewalker11 can you run this code standalone
I think the default node is unreachable here also syntax_error node is defined anywhere