It is legal for long values in the config file to have an L or for float values to have an f. For example, the default value for hive.compactor.check.interval was 300L. As part of
HIVE-5799, many long values were converted to TimeUnit. Attempts to read these values now throw "java.lang.IllegalArgumentException: Invalid time unit l"
We need to change this to ignore the L or f, so that users existing config files don't break. I propose to do this by changing HiveConf.unitFor to detect the L or f and interpret it to mean the default time unit.