add unit test for the indexes meta-tag-record interface
add unit test for the indexes meta-tag-record interface

replay/metrictank,replay/metrictank,raintank/raintank-metric,raintank/metrictank,raintank/metrictank,replay/metrictank,raintank/metrictank,raintank/raintank-metric,replay/metrictank,raintank/metrictank,raintank/raintank-metric