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From Darren Hoo <darren....@gmail.com>
Subject is the number of select count(1) from kudu_table exact?
Date Wed, 18 Jan 2017 02:24:01 GMT
We have a kudu table with size about 120GB, when we try to backup the kudu
to impala and stored as parquet on hdfs

create table parquet_backup stored as parquet as select * from kudu_table

but the two numbers we get by running

   select count(1) from kudu_table
   select count(1) from parquet_backup

is Not equal.

So my question is whether the result of  count(1) is an estimated number or
something is wrong when we try to backup the kudu table?

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