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From Lu Wei <wey...@outlook.com>
Subject 答复: phoenix query server java.lang.ClassCastException for BIGINT ARRAY column
Date Thu, 19 Apr 2018 06:57:08 GMT
by the way, all the queries are shot in sqlline-thin.py



________________________________
发件人: Lu Wei
发送时间: 2018年4月19日 6:51:15
收件人: user@phoenix.apache.org
主题: 答复: phoenix query server java.lang.ClassCastException for BIGINT ARRAY column


## Version:
phoenix: 4.13.2-cdh5.11.2
hive: 1.1.0-cdh5.11.2

to reproduce:

-- create table

create table if not exists testarray(id bigint not null, events bigint array constraint pk
primary key (id))


-- upsert data:

upsert into testarray values (1, array[1,2]);


-- query:

select id from testarray;   -- fine

select * from testarray;    -- error

________________________________
发件人: sergey.soldatov@gmail.com <sergey.soldatov@gmail.com> 代表 Sergey Soldatov
<sergeysoldatov@gmail.com>
发送时间: 2018年4月19日 6:37:06
收件人: user@phoenix.apache.org
主题: Re: phoenix query server java.lang.ClassCastException for BIGINT ARRAY column

Could you please be more specific? Which version of phoenix are you using? Do you have a small
script to reproduce? At first glance it looks like a PQS bug.

Thanks,
Sergey

On Thu, Apr 19, 2018 at 8:17 AM, Lu Wei <wey.lu@outlook.com<mailto:wey.lu@outlook.com>>
wrote:

Hi there,

I have a phoenix table containing an BIGINT ARRAY column. But when querying query server (through
sqlline-thin.py), there is an exception:

java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long

BTW, when query through sqlline.py, everything works fine. And data in HBase table are of
Long type, so why does the Integer to Long cast happen?



## Table schema:

create table if not exists gis_tracking3(tracking_object_id bigint not null, lat double, lon
double, speed double, bearing double, time timestamp not null, events bigint array constraint
pk primary key (tracking_object_id, time))


## when query events[1], it works fine:

0: jdbc:phoenix:thin:url=http://10.10.13.87:8> select  events[1]+1 from gis_tracking3;
+------------------------------+
| (ARRAY_ELEM(EVENTS, 1) + 1)  |
+------------------------------+
| 11                           |
| 2223                         |
| null                         |
| null                         |
| 10001                        |
+------------------------------+



## when querying events, it throws exception:

0: jdbc:phoenix:thin:url=http://10.10.13.87:8> select  events from gis_tracking3;
java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long
  at org.apache.phoenix.shaded.org<http://org.apache.phoenix.shaded.org>.apache.calcite.avatica.util.AbstractCursor$LongAccessor.getLong(AbstractCursor.java:550)
  at org.apache.phoenix.shaded.org<http://org.apache.phoenix.shaded.org>.apache.calcite.avatica.util.AbstractCursor$ArrayAccessor.convertValue(AbstractCursor.java:1310)
  at org.apache.phoenix.shaded.org<http://org.apache.phoenix.shaded.org>.apache.calcite.avatica.util.AbstractCursor$ArrayAccessor.getObject(AbstractCursor.java:1289)
  at org.apache.phoenix.shaded.org<http://org.apache.phoenix.shaded.org>.apache.calcite.avatica.util.AbstractCursor$ArrayAccessor.getArray(AbstractCursor.java:1342)
  at org.apache.phoenix.shaded.org<http://org.apache.phoenix.shaded.org>.apache.calcite.avatica.util.AbstractCursor$ArrayAccessor.getString(AbstractCursor.java:1354)
  at org.apache.phoenix.shaded.org<http://org.apache.phoenix.shaded.org>.apache.calcite.avatica.AvaticaResultSet.getString(AvaticaResultSet.java:257)
  at sqlline.Rows$Row.<init>(Rows.java:183)
  at sqlline.BufferedRows.<init>(BufferedRows.java:38)
  at sqlline.SqlLine.print(SqlLine.java:1660)
  at sqlline.Commands.execute(Commands.java:833)
  at sqlline.Commands.sql(Commands.java:732)
  at sqlline.SqlLine.dispatch(SqlLine.java:813)
  at sqlline.SqlLine.begin(SqlLine.java:686)
  at sqlline.SqlLine.start(SqlLine.java:398)
  at sqlline.SqlLine.main(SqlLine.java:291)
  at org.apache.phoenix.queryserver.client.SqllineWrapper.main(SqllineWrapper.java:93)



I guess there is some issue in query sever, but can't figure out why.

Any suggestions?



Thanks,

Wei

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