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From Peter Edike <peter.ed...@interswitchgroup.com>
Subject RE: Exception While Querying Decimal Fields in Apache Drill
Date Fri, 27 Apr 2018 14:46:40 GMT

Drill Version                  1.12.0

planner.enable_decimal_data_type is set to true on the system.


-----Original Message-----

From: Andries Engelbrecht <aengelbrecht@mapr.com>

Sent: Friday, April 27, 2018 3:41 PM

To: user@drill.apache.org

Subject: Re: Exception While Querying Decimal Fields in Apache Drill

What version of Drill are you using?

Also is planner.enable_decimal_data_type set to true on the system?


´╗┐On 4/27/18, 7:24 AM, "Peter Edike" <peter.edike@interswitchgroup.com> wrote:

    Tried That, It did not work. Still Fails with the exception. Let me even add that even
if the query is a simple select ....from statement, as long any of the fields is decimal type,
the statement will fail with the stated exception

    Please Help.... a lot depends on this

    Best regards,

    Peter Edike

    This message has been marked as CONFIDENTIAL on Friday, April 27, 2018 @ 3:24:36 PM

    -----Original Message-----

    From: Andries Engelbrecht <aengelbrecht@mapr.com>

    Sent: Friday, April 27, 2018 3:07 PM

    To: user@drill.apache.org

    Subject: Re: Exception While Querying Decimal Fields in Apache Drill

    Perhaps try to convert the predicate and select operations involving the decimal types
to float or similar.

    i.e tran_completed = 1.0   and ((cast(SETTLE_AMOUNT_IMPACT as double) *(-1.0))/100.0)

    Alternatively you may have to cast the decimals as float, but that will be more cumbersome.


    On 4/27/18, 5:18 AM, "Peter Edike" <peter.edike@interswitchgroup.com> wrote:

        I am trying to run the following query in apache drill, I am querying data stored
in parquet files using the following query

        select pan, count(*) as number_of_transactions ,

        terminal_id,SUM((cast(SETTLE_AMOUNT_IMPACT as double) *-1)/100) AS settle_amount_impact

        from dfs.`/iswdata/storage/products/superswitch/parquet/transactions`

        where pan like '506126%' and terminal_id like '1%' and

        sink_node_name like ('SWTDB%')

       and source_node_name not like ('SWTDBLsrc')

        and tran_completed=1

        and tran_reversed = 0

        and tran_postilion_originated = 1

        AND tran_type = '01'

        --and pan like '506126%0011'

        group by pan,terminal_id

        The Schema for the data I am querying is as follows

        post_tran_id LONG

         post_tran_cust_id :LONG

         settle_entity_id :INTEGER

         batch_nr : INTEGER

         prev_post_tran_id : LONG

         next_post_tran_id : LONG

         sink_node_name : STRING

         tran_postilion_originated : DECIMAL

         tran_completed : DECIMAL

         tran_amount_req : DECIMAL

         tran_amount_rsp : DECIMAL

         settle_amount_impact : DECIMAL

         tran_cash_req : DECIMAL

         tran_cash_rsp : DECIMAL

        tran_currency_code : STRING

        tran_tran_fee_req : DECIMAL

        tran_tran_fee_rsp : DECIMAL

        tran_tran_fee_currency_code : STRING

        tran_proc_fee_req : DECIMAL

        tran_proc_fee_rsp : DECIMAL

        tran_proc_fee_currency_code : STRING

        settle_amount_req : DECIMAL

        settle_amount_rsp : DECIMAL

        settle_cash_req : DECIMAL

        settle_cash_rsp : DECIMAL

        settle_tran_fee_req : DECIMAL

        settle_tran_fee_rsp : DECIMAL

        settle_proc_fee_req : DECIMAL

        settle_proc_fee_rsp : DECIMAL

        settle_currency_code : STRING

        However When I run the query against the dataset, I get the following exception

        SYSTEM ERROR: ClassCastException: org.apache.drill.exec.vector.NullableDecimal28SparseVector
cannot be cast to org.apache.drill.exec.vector.VariableWidthVector

        More so, the same error occurs when I include a decimal field in the select clause.
Please, is there something I am missing or doing wrong, Any pointer will be deeply appreciated

        Kind Regards



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