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  1. MariaDB Server
  2. MDEV-30411

main.explain_json_format_partitions fails on Debian armel and armhf builders with mismatches

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      On the first ever upload of MariaDB 10.11 to Debian, I noticed that various tests that compare the JSON output from the optimizer fails with mismatches on armel and armhf builds (amd64 and arm64 pass):

      Failing test(s): main.rowid_filter_innodb main.analyze_stmt_orderby main.explain_json_format_partitions main.cte_recursive main.derived_cond_pushdown main.order_by main.rowid_filter main.intersect main.except main.except_all

      main.except_all                          w5 [ fail ]
              Test ended at 2023-01-12 20:20:18
       
      CURRENT_TEST: main.except_all
      --- /<<PKGBUILDDIR>>/mysql-test/main/except_all.result	2022-11-14 18:10:21.000000000 +0000
      +++ /<<PKGBUILDDIR>>/mysql-test/main/except_all.reject	2023-01-12 20:20:18.132443098 +0000
      @@ -115,13 +115,9 @@
       ANALYZE format=json select * from ((select a,b from t1) except all (select c,d from t2)) a;
       ANALYZE
       {
      -  "query_optimization": {
      -    "r_total_time_ms": "REPLACED"
      -  },
         "query_block": {
           "select_id": 1,
           "r_loops": 1,
      -    "r_total_time_ms": "REPLACED",
           "nested_loop": [
             {
               "table": {
      @@ -146,7 +142,6 @@
                           "query_block": {
                             "select_id": 2,
                             "r_loops": 1,
      -                      "r_total_time_ms": "REPLACED",
                             "nested_loop": [
                               {
                                 "table": {
      @@ -169,7 +164,6 @@
                             "select_id": 3,
                             "operation": "EXCEPT",
                             "r_loops": 1,
      -                      "r_total_time_ms": "REPLACED",
                             "nested_loop": [
                               {
                                 "table": {
      @@ -199,13 +193,9 @@
       ANALYZE format=json select * from ((select a from t1) except all (select c from t2)) a;
       ANALYZE
       {
      -  "query_optimization": {
      -    "r_total_time_ms": "REPLACED"
      -  },
         "query_block": {
           "select_id": 1,
           "r_loops": 1,
      -    "r_total_time_ms": "REPLACED",
           "nested_loop": [
             {
               "table": {
      @@ -230,7 +220,6 @@
                           "query_block": {
                             "select_id": 2,
                             "r_loops": 1,
      -                      "r_total_time_ms": "REPLACED",
                             "nested_loop": [
                               {
                                 "table": {
      @@ -253,7 +242,6 @@
                             "select_id": 3,
                             "operation": "EXCEPT",
                             "r_loops": 1,
      -                      "r_total_time_ms": "REPLACED",
                             "nested_loop": [
                               {
                                 "table": {
      @@ -469,9 +457,6 @@
       ANALYZE format=json (select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4);
       ANALYZE
       {
      -  "query_optimization": {
      -    "r_total_time_ms": "REPLACED"
      -  },
         "query_block": {
           "union_result": {
             "table_name": "<except1,2>",
      @@ -483,7 +468,6 @@
                 "query_block": {
                   "select_id": 1,
                   "r_loops": 1,
      -            "r_total_time_ms": "REPLACED",
                   "nested_loop": [
                     {
                       "table": {
      @@ -525,7 +509,6 @@
                   "select_id": 2,
                   "operation": "EXCEPT",
                   "r_loops": 1,
      -            "r_total_time_ms": "REPLACED",
                   "nested_loop": [
                     {
                       "table": {
      @@ -569,13 +552,9 @@
       ANALYZE format=json select * from ((select a,b,e,f from t1,t3) except all (select c,d,g,h from t2,t4)) t;
       ANALYZE
       {
      -  "query_optimization": {
      -    "r_total_time_ms": "REPLACED"
      -  },
         "query_block": {
           "select_id": 1,
           "r_loops": 1,
      -    "r_total_time_ms": "REPLACED",
           "nested_loop": [
             {
               "table": {
      @@ -600,7 +579,6 @@
                           "query_block": {
                             "select_id": 2,
                             "r_loops": 1,
      -                      "r_total_time_ms": "REPLACED",
                             "nested_loop": [
                               {
                                 "table": {
      @@ -642,7 +620,6 @@
                             "select_id": 3,
                             "operation": "EXCEPT",
                             "r_loops": 1,
      -                      "r_total_time_ms": "REPLACED",
                             "nested_loop": [
                               {
                                 "table": {
       
      mysqltest: Result length mismatch
      

      Logs:

      This is somewhat similar to MDEV-11711 that had mismatches in JSON output on armhf only.

      This is also similar to MDEV-8981 and MDEV-11866 where the issue was specifically the row

      "r_total_time_ms": "REPLACED",
      

      Jira MDEV-20538 is the newest in this category and only one I found still open (assigned to psergei).

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              danblack Daniel Black
              otto Otto Kekäläinen
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                Updated:
                Resolved:

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