Bug report #16451

Mapinfo file gets corrupted when deleting lots of features

Added by Pedro Camargo about 7 years ago. Updated over 5 years ago.

Affected QGIS version:2.18.5 Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:end of life
Crashes QGIS or corrupts data:No Copied to github as #:24360


When editing mapinfo tab files, the layer gets corrupted when a large number of features are deleted between saves to disk

example_tab.7z (438 KB) Pedro Camargo, 2017-04-27 04:17 PM


#1 Updated by Even Rouault about 7 years ago

Which operating system: Windows ?
Can you attach an original file (before corruption), and give a more precise procedure to reproduce the issue (which features in particular) ?
Can you describe the corruption more precisely: it is something you see in QGIS and/or MapInfo ? are the deleted features still there or maybe the layer cannot be displayed at all ?
What is the GDAL version ?

#2 Updated by Pedro Camargo about 7 years ago

Yes, windows 10
Files attached (before and after corruption)
GDAL version 2.1.3
When you edit the table (adding or deleting fields, for example), things go smoothly until you try to commit the changes. When you do that, youget a message that you cannot commit those changes. After that, when you ask to roll back, you cannot open the file in Mapinfo (says it is corrupted) and QGIS opens just an empty table when you that the said layer.

error report when deleting fields:

2017-04-28T09:19:36 0 QGIS Ready!
2017-04-28T09:21:32 1 Commit errors:
ERROR: 2 attribute(s) not deleted.

Provider errors:
OGR error deleting field 5: WriteBytes(): Attempt to write past end of data block.
2017-04-28T09:21:34 1 Commit errors:
ERROR: 2 attribute(s) not deleted.
Provider errors:
OGR error deleting field 6: Invalid field index
OGR error deleting field 5: WriteBytes(): Attempt to write past end of data block.

#3 Updated by Giovanni Manghi about 7 years ago

  • Easy fix? set to No
  • Regression? set to No

#4 Updated by Giovanni Manghi about 7 years ago

  • Category set to Vectors

#5 Updated by Giovanni Manghi over 5 years ago

  • Status changed from Open to Closed
  • Resolution set to end of life

End of life notice: QGIS 2.18 LTR


QGIS 3.4 has recently become our new Long Term Release (LTR) version. This is a major step in our history – a long term release version based on the massive updates, library upgrades and improvements that we carried out in the course of the 2.x to 3x upgrade cycle.

We strongly encourage all users who are currently using QGIS 2.18 LTR as their preferred QGIS release to migrate to QGIS 3.4. This new LTR version will receive regular bugfixes for at least one year. It also includes hundreds of new functions, usability improvements, bugfixes, and other goodies. See the relevant changelogs for a good sampling of all the new features that have gone into version 3.4

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We strongly discourage the continued use of QGIS 2.18 LTR as it is now officially unsupported, which means we’ll not provide any bug fix releases for it.

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