fix: restrict cfn-lint schema update to us-east-1 to avoid pickle error#3901
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fix: restrict cfn-lint schema update to us-east-1 to avoid pickle error#3901
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cfn-lint -u fails with a multiprocessing pickle error when updating schemas for all regions. Restricting to us-east-1 avoids the issue since schema structure validation doesn't require region-specific schemas. See aws-cloudformation/cfn-lint#4379
roger-zhangg
approved these changes
Apr 2, 2026
reedham-aws
approved these changes
Apr 2, 2026
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Problem
cfn-lint -ufails intermittently with a multiprocessing pickle error when updating schemas for all regions:This is a known cfn-lint bug: aws-cloudformation/cfn-lint#4379
Fix
Pass
--regions us-east-1to restrict schema updates to a single region. This avoids the multiprocessing issue since cfn-lint is used here for CloudFormation template structure validation, which doesn't require region-specific schemas.