[jira] [Comment Edited] (DRILL-4323) Hive Native Reader : A simple count(*) throws Incoming batch has an empty schema error

["Jinfeng Ni (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-4323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15122462#comment-15122462 ] 

Jinfeng Ni edited comment on DRILL-4323 at 1/28/16 10:42 PM:
-------------------------------------------------------------

I should take it back. Looks like the unit test is successful, but the query itself hit an Exception. 



was (Author: jni):
I should take it back. Looks like the unit test is successful, but the query itself it an Exception. 


> Hive Native Reader : A simple count(*) throws Incoming batch has an empty schema error
> --------------------------------------------------------------------------------------
>
>                 Key: DRILL-4323
>                 URL: https://issues.apache.org/jira/browse/DRILL-4323
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - Hive
>    Affects Versions: 1.5.0
>            Reporter: Rahul Challapalli
>            Priority: Critical
>         Attachments: error.log
>
>
> git.commit.id.abbrev=3d0b4b0
> A simple count(*) query does not work when hive native reader is enabled
> {code}
> 0: jdbc:drill:zk=10.10.100.190:5181> select count(*) from customer;
> +---------+
> | EXPR$0  |
> +---------+
> | 100000  |
> +---------+
> 1 row selected (3.074 seconds)
> 0: jdbc:drill:zk=10.10.100.190:5181> alter session set `store.hive.optimize_scan_with_native_readers` = true;
> +-------+--------------------------------------------------------+
> |  ok   |                        summary                         |
> +-------+--------------------------------------------------------+
> | true  | store.hive.optimize_scan_with_native_readers updated.  |
> +-------+--------------------------------------------------------+
> 1 row selected (0.2 seconds)
> 0: jdbc:drill:zk=10.10.100.190:5181> select count(*) from customer;
> Error: SYSTEM ERROR: IllegalStateException: Incoming batch [#1341, ProjectRecordBatch] has an empty schema. This is not allowed.
> Fragment 0:0
> [Error Id: 4c867440-0fd3-4eda-922f-0f5eadcb1463 on qa-node191.qa.lab:31010] (state=,code=0)
> {code}
> Hive DDL for the table :
> {code}
> create table customer
> (
>     c_customer_sk int,
>     c_customer_id string,
>     c_current_cdemo_sk int,
>     c_current_hdemo_sk int,
>     c_current_addr_sk int,
>     c_first_shipto_date_sk int,
>     c_first_sales_date_sk int,
>     c_salutation string,
>     c_first_name string,
>     c_last_name string,
>     c_preferred_cust_flag string,
>     c_birth_day int,
>     c_birth_month int,
>     c_birth_year int,
>     c_birth_country string,
>     c_login string,
>     c_email_address string,
>     c_last_review_date string
> )
> STORED AS PARQUET
> LOCATION '/drill/testdata/customer'
> {code}
> Attached the log file with the stacktrace



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