Hi,   There are many possible variables, including the exact version of impala, the operating system it was built on, the build flags and environment variables, and what version/build of dependencies you're using.   I think the specific thing you're probably seeing with file sizes is that in the CDH distribution the debug symbols are stripped from the binaries and included in separate impalad.debug files. Are you running into some error when trying to run your custom build of Impala? It probably makes more sense to debug that problem rather than trying to exactly reproduce Cloudera's build. ... View more