ordered index Error in optimizer garbageCollector

[monetdb-team]

Date: 2018-04-07 00:08:50 +0200
From: Anton Kravchenko <<kravchenko.anton86>>
To: SQL devs <>
Version: 11.29.3 (Mar2018)
CC: @njnes

Last updated: 2018-06-20 11:02:13 +0200

Comment 26348

Date: 2018-04-07 00:08:50 +0200
From: Anton Kravchenko <<kravchenko.anton86>>

Here is a reproducible example.

create table t1(v0 int, v1 char(1));
insert into t1 values (1,'a'),(2,'b'),(3,'c');
create ordered index index_t1_v1 on t1(v1);

create table t2(v1 char(1));
insert into t2 values ('a');

create temp table t3 as
(select t1.v0 from t1,t2 where trim(t2.v1)=t1.v1)
on commit preserve rows;

1. --enable-assert=no
   mclient gives "Error in optimizer garbageCollector"
   merver5 gives "could not find t1.%index_t1_v1
   t1.v0
   t1.v1
   t1.%TID%
   t1.v0
   t1.v1
   t1.%TID%"

2. --enable-assert=yes
   merver5 crashed "could not find t1.%index_t1_v1
   t1.v0
   t1.v1
   t1.%TID%
   t1.v0
   t1.v1
   t1.%TID%
   mserver5: /home/akravchenko/MonetDB-Mar2018/MonetDB-11.29.3/sql/backends/monet5/rel_bin.c:576: exp_bin: Assertion `s' failed.
   Aborted (core dumped)

I am using the latest MonetDB version:
MonetDB 5 server v11.29.3 "Mar2018" (64-bit, 128-bit integers)
Copyright (c) 1993 - July 2008 CWI
Copyright (c) August 2008 - 2018 MonetDB B.V., all rights reserved
Visit https://www.monetdb.org/ for further information
Found 31.3GiB available memory, 4 available cpu cores
Libraries:
libpcre: 8.32 2012-11-30 (compiled with 8.32)
openssl: OpenSSL 1.0.2k 26 Jan 2017 (compiled with )
libxml2: 2.9.1 (compiled with 2.9.1)
Compiled by: mockbuild@ (x86_64-redhat-linux-gnu)
Compilation: gcc -std=gnu99 -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic
Linking : /usr/bin/ld -m elf_x86_64 -Wl,-z,relro -Wl,-Bsymbolic-functions

Comment 26353

Date: 2018-04-09 10:46:29 +0200
From: MonetDB Mercurial Repository <>

Changeset 799859bfffd7 made by Pedro Ferreira pedro.ferreira@monetdbsolutions.com in the MonetDB repo, refers to this bug.

For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=799859bfffd7

Changeset description:

Added tests for bugs 6572 and 6573

Comment 26356

Date: 2018-04-11 16:20:11 +0200
From: MonetDB Mercurial Repository <>

Changeset 885e050fdec6 made by Niels Nes niels@cwi.nl in the MonetDB repo, refers to this bug.

For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=885e050fdec6

Changeset description:

fixes for bugs 6572, 6573 and 6574
also fix select -2*50 cast problem, fix type of function in rewriter.

6572/6574 fixed in dead code optimizer

6573 fixed problem in 'IN' handling with constants