Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vxsuS-00HEC8-2r for pgsql-committers@arkaria.postgresql.org; Wed, 04 Mar 2026 20:33:32 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vxsuR-00EC30-0s for pgsql-committers@arkaria.postgresql.org; Wed, 04 Mar 2026 20:33:31 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vxsuR-00EC2s-0E for pgsql-committers@lists.postgresql.org; Wed, 04 Mar 2026 20:33:31 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vxsuL-00000000cc7-3IPd for pgsql-committers@lists.postgresql.org; Wed, 04 Mar 2026 20:33:31 +0000 Received: from gemulon.postgresql.org ([2001:4800:3e1:1::198]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vxsuK-000fYy-10 for pgsql-committers@lists.postgresql.org; Wed, 04 Mar 2026 20:33:24 +0000 Received: from localhost ([127.0.0.1] helo=gemulon.postgresql.org) by gemulon.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vxsuJ-002PNY-1E for pgsql-committers@lists.postgresql.org; Wed, 04 Mar 2026 20:33:23 +0000 Content-Type: multipart/mixed; boundary="===============1624041025004644958==" MIME-Version: 1.0 From: Tom Lane To: pgsql-committers@lists.postgresql.org Subject: pgsql: Fix estimate_hash_bucket_stats's correction for skewed data. X-Auto-Response-Suppress: All Auto-Submitted: auto-generated Message-Id: Date: Wed, 04 Mar 2026 20:33:23 +0000 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --===============1624041025004644958== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Rml4IGVzdGltYXRlX2hhc2hfYnVja2V0X3N0YXRzJ3MgY29ycmVjdGlvbiBmb3Igc2tld2VkIGRh dGEuCgpUaGUgcHJldmlvdXMgaWRlYSB3YXMgInNjYWxlIHVwIHRoZSBidWNrZXRzaXplIGVzdGlt YXRlIGJ5IHRoZSByYXRpbwpvZiB0aGUgTUNWJ3MgZnJlcXVlbmN5IHRvIHRoZSBhdmVyYWdlIHZh bHVlJ3MgZnJlcXVlbmN5Ii4gIEJ1dCB3ZQpzaG91bGQgaGF2ZSBiZWVuIHN1c3BpY2lvdXMgb2Yg dGhhdCBwbGFuLCBzaW5jZSBpdCBmcmVxdWVudGx5IGxlZCB0bwppbXBvc3NpYmxlICg+IDEpIHZh bHVlcyB3aGljaCB3ZSBoYWQgdG8gYXBwbHkgYW4gYWQtaG9jIGNsYW1wIHRvLgpKb2VsIEphY29i c29uIGRlbW9uc3RyYXRlZCB0aGF0IGl0IHNvbWV0aW1lcyBsZWFkcyB0byBtYWtpbmcgdGhlCndy b25nIGNob2ljZSBhYm91dCB3aGljaCBzaWRlIG9mIHRoZSBoYXNoIGpvaW4gc2hvdWxkIGJlIGlu bmVyLgoKSW5zdGVhZCwgZHJvcCB0aGUgd2hvbGUgYnVzaW5lc3Mgb2YgZXN0aW1hdGluZyBhdmVy YWdlIGZyZXF1ZW5jeSwgYW5kCmp1c3QgY2xhbXAgdGhlIGJ1Y2tldHNpemUgZXN0aW1hdGUgdG8g YmUgYXQgbGVhc3QgdGhlIE1DVidzIGZyZXF1ZW5jeS4KVGhpcyBjb3JyZXNwb25kcyB0byB0aGUg YnVja2V0IHNpemUgd2UnZCBnZXQgaWYgb25seSB0aGUgTUNWIGFwcGVhcnMKaW4gYSBidWNrZXQs IGFuZCB0aGUgTUNWJ3MgZnJlcXVlbmN5IGlzIG5vdCBhZmZlY3RlZCBieSB0aGUKV0hFUkUtY2xh dXNlIGZpbHRlcnMuICAoV2Ugd2VyZSBhbHJlYWR5IG1ha2luZyB0aGUgbGF0dGVyIGFzc3VtcHRp b24uKQpUaGlzIGFsc28gbWF0Y2hlcyB0aGUgY29kaW5nIHVzZWQgc2luY2UgNDg2N2Q3ZjYyIGlu IHRoZSBjYXNlIHdoZXJlCm9ubHkgYSBkZWZhdWx0IG5kaXN0aW5jdCBlc3RpbWF0ZSBpcyBhdmFp bGFibGUuCgpJbnRlcmVzdGluZ2x5LCB0aGlzIGNoYW5nZSBhZmZlY3RzIG5vIGV4aXN0aW5nIHJl Z3Jlc3Npb24gdGVzdCBjYXNlcy4KQWRkIG9uZSB0byBkZW1vbnN0cmF0ZSB0aGF0IGl0IGhlbHBz IHBpY2sgdGhlIHNtYWxsZXIgdGFibGUgdG8gYmUKaGFzaGVkIHdoZW4gdGhlIE1DViBpcyBjb21t b24gZW5vdWdoIHRvIGFmZmVjdCB0aGUgcmVzdWx0cy4KClRoaXMgbGVhdmVzIGVzdGltYXRlX2hh c2hfYnVja2V0X3N0YXRzIG5vdCBjb25zaWRlcmluZyB0aGUgZWZmZWN0cyBvZgpudWxsIGpvaW4g a2V5cyBhdCBhbGwsIHdoaWNoIHdlIHNob3VsZCBwcm9iYWJseSBpbXByb3ZlLiAgSG93ZXZlciwK SSBoYXZlIGEgZGlmZmVyZW50IHBhdGNoIGluIHRoZSBxdWV1ZSB0aGF0IHdpbGwgY2hhbmdlIHRo ZSBleGVjdXRvcidzCmhhbmRsaW5nIG9mIG51bGwgam9pbiBrZXlzLCBzbyBpdCBzZWVtcyBhcHBy b3ByaWF0ZSB0byB3YWl0IHRpbGwKdGhhdCdzIGluIGJlZm9yZSBkb2luZyBhbnl0aGluZyBtb3Jl IGhlcmUuCgpSZXBvcnRlZC1ieTogSm9lbCBKYWNvYnNvbiA8am9lbEBjb21waWxlci5vcmc+CkF1 dGhvcjogVG9tIExhbmUgPHRnbEBzc3MucGdoLnBhLnVzPgpSZXZpZXdlZC1ieTogSm9lbCBKYWNv YnNvbiA8am9lbEBjb21waWxlci5vcmc+CkRpc2N1c3Npb246IGh0dHBzOi8vcG9zdGdyLmVzL20v MzQxYjcyM2MtZGE0NS00MDU4LTk0NDYtMTUxNGRlZGIxN2MxQGFwcC5mYXN0bWFpbC5jb20KCkJy YW5jaAotLS0tLS0KbWFzdGVyCgpEZXRhaWxzCi0tLS0tLS0KaHR0cHM6Ly9naXQucG9zdGdyZXNx bC5vcmcvcGcvY29tbWl0ZGlmZi9lNmExZDhmNWFjYmM2NjFkMzE2NWQ5MmQwY2MxZmY2YjhmOTk3 ZjE2CgpNb2RpZmllZCBGaWxlcwotLS0tLS0tLS0tLS0tLQpzcmMvYmFja2VuZC91dGlscy9hZHQv c2VsZnVuY3MuYyAgIHwgMzkgKysrKysrKy0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0K c3JjL3Rlc3QvcmVncmVzcy9leHBlY3RlZC9qb2luLm91dCB8IDI1ICsrKysrKysrKysrKysrKysr KysrKysrKwpzcmMvdGVzdC9yZWdyZXNzL3NxbC9qb2luLnNxbCAgICAgIHwgMTkgKysrKysrKysr KysrKysrKysrKwozIGZpbGVzIGNoYW5nZWQsIDUxIGluc2VydGlvbnMoKyksIDMyIGRlbGV0aW9u cygtKQoK --===============1624041025004644958==--