version NullPointerException when changelog table is empty

[avs777]

When executing migrate version command, NullPointerException is thrown if changlog table is empty. If I add any record to the table everything starts working fine.

mybatis-migrations-3.2.1
mysql-connector-java-5.1.39-bin.jar

migrate --env=ci version 20161014040630 --trace
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Picked up _JAVA_OPTIONS: -Djava.net.preferIPv4Stack=true
------------------------------------------------------------------------
-- MyBatis Migrations - version
------------------------------------------------------------------------
Upgrading to: 20161014040630
------------------------------------------------------------------------
-- MyBatis Migrations FAILURE
-- Total time: 0s
-- Finished at: Thu Oct 13 21:09:04 PDT 2016
-- Final Memory: 17M/479M
------------------------------------------------------------------------


ERROR: java.lang.NullPointerExceptionorg.apache.ibatis.migration.MigrationException: java.lang.NullPointerException
        at org.apache.ibatis.migration.CommandLine.runCommand(CommandLine.java:71)
        at org.apache.ibatis.migration.CommandLine.execute(CommandLine.java:42)
        at org.apache.ibatis.migration.Migrator.main(Migrator.java:20)
Caused by: java.lang.NullPointerException
        at org.apache.ibatis.migration.operations.VersionOperation.operate(VersionOperation.java:49)
        at org.apache.ibatis.migration.commands.VersionCommand.execute(VersionCommand.java:35)
        at org.apache.ibatis.migration.CommandLine.runCommand(CommandLine.java:65)
        ... 2 more

[h3adache]

@avs777 I'm sorry I'm confused how you got into the state where the changelog table was empty.
If you ran "down" steps until it was empty then it should have deleted the Changelog table in which cause version command would have told you there was no changelog?

Something like:

Caused by: org.hsqldb.HsqlException: user lacks privilege or object not found: CHANGELOG

[h3adache]

@avs777 if you run into this again please give us steps to reproduce or, if you can, a sample project would be great. I can't reproduce your issue atm.