jackwener/OpenCLI · error · CommandExecutionError

Zhihu answer comments reused id ${rootDescriptor.id} across

Error message

Zhihu answer comments reused id ${rootDescriptor.id} across graph roles

What it means

buildCommentRows builds a strict tree: each comment id must appear exactly once across all root graphs (roots and replies). Before inserting a root comment it checks globalIds; a duplicate means the same comment id was returned as a root twice (or already seen as a reply), which would corrupt rank/reply assignment. The library throws to fail fast rather than emit duplicated rows.

Source

Thrown at clis/zhihu/answer-comments-helpers.js:241

        parent_id: descriptor.parentId,
        author: memberName(comment.author) || 'anonymous',
        reply_to: descriptor.parentId ? memberName(comment.reply_to_author) : '',
        likes: normalizeCount(comment.like_count ?? comment.vote_count),
        created_at: normalizeUnixSeconds(comment.created_time),
        url: context.questionId
            ? `https://www.zhihu.com/question/${context.questionId}/answer/${context.answerId}#comment-${descriptor.id}`
            : typeof comment.url === 'string' ? comment.url : '',
        content: stripHtml(comment.content || ''),
    };
}
export function buildCommentRows(roots, repliesByRoot, context) {
    const rows = [];
    const globalIds = new Set();
    for (let rootIndex = 0; rootIndex < roots.length; rootIndex += 1) {
        const root = roots[rootIndex];
        const rootDescriptor = describeComment(root, 'root');
        if (globalIds.has(rootDescriptor.id)) {
            throw new CommandExecutionError(`Zhihu answer comments reused id ${rootDescriptor.id} across graph roles`);
        }
        globalIds.add(rootDescriptor.id);
        rows.push(toRow(root, rootDescriptor, {
            rank: rows.length + 1, commentRank: rootIndex + 1, replyRank: 0, depth: 0,
        }, context));

        const childrenById = new Map();
        for (const child of repliesByRoot.get(rootDescriptor.id) || []) {
            const descriptor = describeComment(child, 'child', rootDescriptor.id);
            if (globalIds.has(descriptor.id) || childrenById.has(descriptor.id)) {
                throw new CommandExecutionError(`Zhihu answer comments reused id ${descriptor.id} across graph roles`);
            }
            globalIds.add(descriptor.id);
            childrenById.set(descriptor.id, { comment: child, descriptor });
        }
        const depths = resolveDepths(rootDescriptor.id, childrenById);
        let replyRank = 0;
        for (const { comment, descriptor } of childrenById.values()) {

View on GitHub (pinned to 49907e53dc)

Solutions

1. Deduplicate roots by id before calling buildCommentRows: const seen=new Set(); roots=roots.filter(r=>!seen.has(r.id)&&seen.add(r.id))
2. Re-fetch with stable ordering (--order latest) or a lower --limit to reduce page-shift overlap
3. Check for API retries duplicating the root list in fetchRootComments

Example fix

// before
const rows = buildCommentRows(roots, repliesByRoot, ctx);
// after
const seen = new Set();
const uniqueRoots = roots.filter(r => (seen.has(r.id) ? false : (seen.add(r.id), true)));
const rows = buildCommentRows(uniqueRoots, repliesByRoot, ctx);

const ids = roots.map(r => commentId(r));
if (new Set(ids).size !== ids.length) throw new Error('duplicate root ids before buildCommentRows');

const isUniqueRoots = (roots) => new Set(roots.map(r => r.id)).size === roots.length;

try { rows = buildCommentRows(roots, repliesByRoot, ctx); }
catch (err) {
  if (String(err.message).includes('reused id') && String(err.message).includes('graph roles')) {
    roots = dedupeById(roots); rows = buildCommentRows(roots, repliesByRoot, ctx);
  } else throw err;
}

When it happens

Trigger: fetchRootComments returned the same root comment id twice (overlapping pagination pages), or a comment already classified as a reply also appears in the root list.

Common situations: Zhihu API pagination shifting while new comments arrive (score-ordered pages overlap); API returning duplicated payloads after retry; version drift in the comments endpoint.

Related errors

• Zhihu answer comments reused id ${descriptor.id} across grap
• Zhihu ${label} returned malformed paging state
• Zhihu answer comments returned conflicting data for comment
• Zhihu ${label} pagination returned a repeated next URL
• Zhihu ${label} pagination exceeded its fetch budget

AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/842633bc56a379e7. Report an issue: GitHub.