I'm trying to query data from a Hive table on a MapR platform. My query is:
use Modern::Perl;
use DBI;
use Data::Dumper;
my $dbh = DBI->connect('dbi:ODBC:DSN=myDSN', undef, undef, {RaiseError
+ => 1});
$dbh->{LongReadLen} = 1000000;
$dbh->{LongTruncOk} = 1;
my $sth = $dbh->prepare(q{select * from table});
$sth->execute;
while (my $row = $sth->fetchall_arrayref) {
say Dumper $row;
}
What I get is the following line repeated hundreds of times to STDERR
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
Then I get the one row in the table, followed by a never-ending stream of the following to STDOUT
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
$VAR1 = [];
And the following to STDERR
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
at conn.pl line 17.
DBD::ODBC::st fetchall_arrayref warning: no select statement currently
+ executing
... repeat forever ....
I have to Control-C to stop this.
Any explanation and way forward is appreciated