I know this is an old thread but still: Did you ever find a solution? We're hitting the same issue. ... View more

For us the problem was a "wrong" locale on the server (env LANG). That meant that the generated JSON was using commas as decimal delimiter instead of dots (e.g. "1,234" instead of "1.234").   We had to change the Impala Environment Safety Valve to include LC_ALL=C ... View more