From patchwork Tue Sep 3 19:42:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Tan X-Patchwork-Id: 11128677 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05A9514DE for ; Tue, 3 Sep 2019 19:42:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CFA5E20820 for ; Tue, 3 Sep 2019 19:42:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="vyKLPAAs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726270AbfICTmv (ORCPT ); Tue, 3 Sep 2019 15:42:51 -0400 Received: from mail-pf1-f201.google.com ([209.85.210.201]:36583 "EHLO mail-pf1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725939AbfICTmv (ORCPT ); Tue, 3 Sep 2019 15:42:51 -0400 Received: by mail-pf1-f201.google.com with SMTP id p16so14852798pfn.3 for ; Tue, 03 Sep 2019 12:42:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=HnQT/YZrOSCrU0QO3jvP97MI17cTZr5GEWFgXQULYa0=; b=vyKLPAAsgPI+G9f3NULDOY0YyywM0k0UvGMQFVTz4jNEM/uxJuRgalSLY84y8q+QA8 Uy062YJYoGWkrJNxJRtEQKcTXF9ySIqpllzaxYbca4F4i0xdGZqGsrtTlPXUP1/ZBbwM Kl1zrFS4z04q4NyDTUZWZQs/aMsQ0Bd8rndttq+7OaLjHhh9YXgi65y+oNiIdoqELNic 3E8L/MnMpIsv2AntWHBEelXseJcNVd3TaGexRIWAF/OxAbkYuQ3K//kleV31ddSfs9Ht Sb6EIWdy0zsHtKppQ2OiS+Vq7DwQnFs4gUbAUM1RDl2UyNYhbYF2msXo7KxpHZnAXL1y zZeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=HnQT/YZrOSCrU0QO3jvP97MI17cTZr5GEWFgXQULYa0=; b=Rbc9WhCHp5TCD5XjGGcssz4Hx4Kg8wsBEd4bDCuoividfkeeouZAFCk0oJLxgznDFY AG3ARINyh1PbKtJCkT+uDf9Vqj8tAqJl5efGdVUNYxjmBrxdVE/YKI4oKHKuyfVcZN3I KdMQeDMqe+x3ZBRVO5RnqspTk6Lko4CnHFyJgq+Hb5YZ2H1xI3efqNevX6TxrzzLRRIa bWox9negHsqJZVkaVIJkRddMrah56LDp1A3cGwHeVR2dHtCsywCLjaC9QiC8M1mRsPIK xiGM8jo1qudo2Dz/84Z5ozsdpbR1oRjJRWN6GxQeTdW5N/jG8YLxnIyUqLzDtoYdKWyX 7cng== X-Gm-Message-State: APjAAAVYZSD8srus6PLatEVRtolDglD67svYiANoMOQbgEOSRVk93hsi PDj2D7XF0gMf8bvyWUIW1do20MEehkns2bLHaPZBpCWkIWmoXFpl/79HTWpEOoHLi6IFyQqsD6t 1XgIRmR5qMokEN8iUWTspheUmM2xkkQ7DFqJu76163sPthxR4wHozBfYM93aHlltP1z/e0p0l8O S1 X-Google-Smtp-Source: APXvYqwIdJ0Hof926I6IP8cY1XHwlS4a7TgtcPsVh3gsBGL2xAWE+/OO3FRYGGZQzr3NcbHHUr3xjFO8ahwQ2fLOYKVR X-Received: by 2002:a63:f118:: with SMTP id f24mr32611089pgi.322.1567539770486; Tue, 03 Sep 2019 12:42:50 -0700 (PDT) Date: Tue, 3 Sep 2019 12:42:47 -0700 Message-Id: <20190903194247.217964-1-jonathantanmy@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.23.0.187.g17f5b7556c-goog Subject: [PATCH] cache-tree: do not lazy-fetch merge tree From: Jonathan Tan To: git@vger.kernel.org Cc: Jonathan Tan Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org When cherry-picking (for example), new trees may be constructed. During this process, Git checks whether these trees exist. However, in a partial clone, this causes a lazy fetch to occur, which is both unnecessary (because Git has already constructed this tree as part of the cherry-picking process) and likely to fail (because the remote probably doesn't have this tree). Do not lazy fetch in this situation. Signed-off-by: Jonathan Tan --- Another partial clone bug. This raises the issue that failed fetches are currently fatal - if they weren't fatal, this cherry-pick would have worked (except with some delay as the fetch is attempted, and with a warning message about the fetch failing). My personal inclination right now is to leave things as it is (fatal failed fetches), but I'm open to other opinions. --- cache-tree.c | 2 +- t/t0410-partial-clone.sh | 14 ++++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/cache-tree.c b/cache-tree.c index c22161f987..9e596893bc 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -407,7 +407,7 @@ static int update_one(struct cache_tree *it, if (repair) { struct object_id oid; hash_object_file(buffer.buf, buffer.len, tree_type, &oid); - if (has_object_file(&oid)) + if (has_object_file_with_flags(&oid, OBJECT_INFO_SKIP_FETCH_OBJECT)) oidcpy(&it->oid, &oid); else to_invalidate = 1; diff --git a/t/t0410-partial-clone.sh b/t/t0410-partial-clone.sh index 6415063980..3e434b6a81 100755 --- a/t/t0410-partial-clone.sh +++ b/t/t0410-partial-clone.sh @@ -492,6 +492,20 @@ test_expect_success 'gc stops traversal when a missing but promised object is re ! grep "$TREE_HASH" out ' +test_expect_success 'do not fetch when checking existence of tree we construct ourselves' ' + rm -rf repo && + test_create_repo repo && + test_commit -C repo base && + test_commit -C repo side1 && + git -C repo checkout base && + test_commit -C repo side2 && + + git -C repo config core.repositoryformatversion 1 && + git -C repo config extensions.partialclone "arbitrary string" && + + git -C repo cherry-pick side1 +' + . "$TEST_DIRECTORY"/lib-httpd.sh start_httpd