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  1. MariaDB Server
  2. MDEV-26123

Using Spatial Indexes results in Update locks cannot be acquired during a READ UNCOMMITTED transaction

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    Description

      Simple table with two colums Type(varchar) and Point(point)

      An index on Type(Tindex) and a spatial index on Point(Pindex)

      Now a query like

      SELECT X(Point) as x,Y(Point) as y,hotels.Type FROM hotels WHERE (Type in ("acco")) AND MBRContains( GeomFromText( 'LINESTRING(4.922 52.909,5.625 52.483)' ), hotels.Point)
      		 
      ;

      Results in a

      Error in query (1207): Update locks cannot be acquired during a READ UNCOMMITTED transaction

      While both

      SELECT X(Point) as x,Y(Point) as y,hotels.Type FROM hotels USE INDEX (Pindex) WHERE (Type in ("acco")) AND MBRContains( GeomFromText( 'LINESTRING(4.922 52.909,5.625 52.483)' ), hotels.Point)
      		 
      ;

      and

      SELECT X(Point) as x,Y(Point) as y,hotels.Type FROM hotels USE INDEX (Tindex) WHERE (Type in ("acco")) AND MBRContains( GeomFromText( 'LINESTRING(4.922 52.909,5.625 52.483)' ), hotels.Point)
      		 
      ;

      work fine. As mariadb 10.5.10 did

      id select_type table type possible_keys key key_len ref rows Extra
      1 SIMPLE hotels range filter Type,Pindex Pindex Type 34 302 NULL 340 (4%) Using where; Using rowid filter

      Attachments

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26204 Update locks cannot be acquired during a READ UNCOMMITTED transaction with SELECT

          • Major - Major loss of function.
          • Closed
          is caused by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25594 Crash in deadlock checker under high load

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-14059 InnoDB assertion failure offset >= ((38U + 36 + 2 * 10) + 5) at page0page.h line 318

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15275 innodb_gis.rtree_purge failed in buildbot with timeout

          • Major - Major loss of function.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. MDEV-15284 innodb_gis.rtree_concurrent_srch fails with COUNT(*) mismatch

          • Major - Major loss of function.
          • Confirmed
          links to

          Web Link Stack Overflow question of affected users

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              vlad.lesin Vladislav Lesin
              brbrbr Bram
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              Dates

                Created:
                Updated:

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