Issue #811: Page #9 entry 0 (key 'bjjl') has 75 extra bytes / Unexpected last index ID: -119 (expected -116)

Please check the attached database file. When running the Doctor, I get

Global Value Errors
-------------------
[1] Unexpected last index ID: -119 (expected -116)

Page Content Errors
-------------------
[1] Page #9 entry 0 has unexpected object format
[2] Page #9 entry 0 (key 'bjjl') has 75 extra bytes

Both errors are not fixable. When creating a new db file with the Doctor, this file yields the same errors. Please advise. 

If you need more information just let me know.

This seems to be the same problem as of issue #796.

It may be possible to improve the Doctor in a way that these two objects will be deleted (not fixed), but still, if there is a bug that may cause storing arrays in a bad format - exploring it requires a way to reproduce the database creation process.

Do you know how to create a new database that will have that specific problem?

Will try to send you some code that recreates this part of the database. Can take some days though. Please stay tuned.

Please see attached NetBeans project. Just run the application once, and check /tmp/bug.odb.

I get 

MacBook:tmp bjjl$ java -cp ~/Downloads/objectdb-2.4.0_03/bin/objectdb.jar com.objectdb.Doctor bug.odb
ObjectDB Doctor [version 2.4.0_03]
Copyright (c) 2012, ObjectDB Software. All rights reserved.

Scanning the database file...
0MB (total)

Analyzing database structure...
100%

Page Content Errors
-------------------
[1] Page #3 entry 0 has unexpected object format
[2] Page #3 entry 0 (key 'guest') has 11 extra bytes

The resulting errors seem to be somewhat random. Sometimes everything is just fine. And just now I got (after deleting the database file and re-running the application):

MacBook:tmp bjjl$ java -cp ~/Downloads/objectdb-2.4.0_03/bin/objectdb.jar com.objectdb.Doctor bug.odb
ObjectDB Doctor [version 2.4.0_03]
Copyright (c) 2012, ObjectDB Software. All rights reserved.

Scanning the database file...
0MB (total)

Analyzing database structure...
100%

Missing Objects (Broken References)
-----------------------------------
[1] BTree #5122(5122):5713873
Referenced by:
  - odbbug.Person(2):'guest'

Seems to depend on the calculated values for password and salt in the code.

Thank you for this useful test.

It was a bug in the Doctor, i.e. the database is fine and there was a false alarm of the Doctor in checking byte arrays.

Build 2.4.1 fixes this problem.