The countdown to another Walmart showdown in the City Council is under way.

The council’s Committee on Zoning is scheduled Thursday to take up the Pullman Park development project, which has generated a lot of controversy because it includes what would be the city’s second Walmart store. The committee was originally expected to vote on the far south side development last month, but chairman Daniel Solis, the 25th Ward alderman, held off on a vote, saying he wanted to give representatives from Walmart and labor unions more time to hash out some sort of agreement on wages and benefits.

But Walmart officials canceled a meeting scheduled for today because of their “travel schedules,” and a company spokesman says there are no plans to sit down with unions before Thursday. “We’re open to a continued dialogue when circumstances merit it,” Steven Restivo told me.