Wikimedia Bugzilla is closed!

When upgrading from Mediawiki 1.15 to 1.21, running the update.php script produced the following output:

.....
Populating rev_sha1 column
...doing rev_id from 1 to 200
Data of revision with rev_id=1 unavailable!
Data of revision with rev_id=2 unavailable!
Data of revision with rev_id=3 unavailable!
Data of revision with rev_id=4 unavailable!
Data of revision with rev_id=5 unavailable!
Data of revision with rev_id=6 unavailable!

... and so on for every row in the table.

It looks like a bug where populateRevisionSha1.php calls new Revision( $row ), and then calls $rev->getSerializedData(), but within the Revision object the mText field is still null.

I fixed this (I think) by changing Revision.php, line 541 to be 
   $this->mText = $this->loadText();
avoiding the lazy extraction. And then re-running the script using
   php populateRevisionSha1.php --force