shicong baed9dc6cc Improve exception message when TMDB not available ...

We saw a few IOExceptions recently which indicated that TMDB may
be down at that time. However, these IOExceptions didn't have
any message to clearly describe that. This CL is to improve
the exception message so next time we don't have to look at the
source code to figure out what happened.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=241984023

2019-04-05 11:53:08 -04:00

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registry

Improve exception message when TMDB not available

2019-04-05 11:53:08 -04:00