Abhishek Gupta created PHOENIX-4898:
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Summary: LAST_VALUE aggregation fails when column contain NULLs
Key: PHOENIX-4898
URL: https://issues.apache.org/jira/browse/PHOENIX-4898
Project: Phoenix
Issue Type: Bug
Affects Versions: 4.7.0
Environment: HBase version: 1.1.2
Phoenix version: 4.7.0
Reporter: Abhishek Gupta
When I use last_value aggregation on a column that is sparse with NULLs it
fails with the exception
{code:java}
Error: Error -1 (00000) : Error while executing SQL "select
TO_CHAR(TO_DATE(pk1,'yyyyMMddHHmm'),'yyyyMMddHH') as t, last_value(m3) within
group (order by pk1 asc) as m3_last, sum(m2) as m2_sum from test_last_value
group by t": Remote driver error: ArrayIndexOutOfBoundsException: (null
exception message) (state=00000,code=-1)
org.apache.phoenix.shaded.org.apache.calcite.avatica.AvaticaSqlException: Error
-1 (00000) : Error while executing SQL "select
TO_CHAR(TO_DATE(pk1,'yyyyMMddHHmm'),'yyyyMMddHH') as t, last_value(m3) within
group (order by pk1 asc) as m3_last, sum(m2) as m2_sum from test_last_value
group by t": Remote driver error: ArrayIndexOutOfBoundsException: (null
exception message) at
org.apache.phoenix.shaded.org.apache.calcite.avatica.Helper.createException(Helper.java:54)
at
org.apache.phoenix.shaded.org.apache.calcite.avatica.Helper.createException(Helper.java:41)
at
org.apache.phoenix.shaded.org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
at
org.apache.phoenix.shaded.org.apache.calcite.avatica.AvaticaStatement.execute(AvaticaStatement.java:208)
at sqlline.Commands.execute(Commands.java:822) at
sqlline.Commands.sql(Commands.java:732) at
sqlline.SqlLine.dispatch(SqlLine.java:808) at
sqlline.SqlLine.begin(SqlLine.java:681) at
sqlline.SqlLine.start(SqlLine.java:398) at
sqlline.SqlLine.main(SqlLine.java:292) at
org.apache.phoenix.queryserver.client.SqllineWrapper.main(SqllineWrapper.java:93)
java.lang.ArrayIndexOutOfBoundsException
{code}
Please find below the DDL and SQL queries to reproduce the issue
{code:java}
create table if not exists test_last_value (pk1 varchar not null, m1 bigint,m2
bigint,m3 bigint, constraint test_last_value_pk primary key (pk1));
upsert into test_last_value(pk1,m1,m2) values('201809010000',10,20);
upsert into test_last_value(pk1,m1,m2) values('201809010030',10,20);
upsert into test_last_value(pk1,m1,m2,m3) values('201809010100',10,20,11);
upsert into test_last_value(pk1,m1,m2) values('201809010130',10,20);
upsert into test_last_value(pk1,m1,m2) values('201809010200',10,20);
upsert into test_last_value(pk1,m1,m2) values('201809010230',10,20);
upsert into test_last_value(pk1,m1,m3) values('201809010300',10,22);
{code}
{noformat}
select * from test_last_value;
+---------------+-----+-------+-------+
| PK1 | M1 | M2 | M3 |
+---------------+-----+-------+-------+
| 201809010000 | 10 | 20 | null |
| 201809010030 | 10 | 20 | null |
| 201809010100 | 10 | 20 | 11 |
| 201809010130 | 10 | 20 | null |
| 201809010200 | 10 | 20 | null |
| 201809010230 | 10 | 20 | null |
| 201809010300 | 10 | null | 22 |
+---------------+-----+-------+-------+
Last value aggregation succeeds when column has no nulls
========================================================
select TO_CHAR(TO_DATE(pk1,'yyyyMMddHHmm'),'yyyyMMddHH') as t, last_value(m1)
within group (order by pk1 asc) as m1_last, sum(m2) as m2_sum from
test_last_value group by t;
+-------------+----------+---------+
| T | M1_LAST | M2_SUM |
+-------------+----------+---------+
| 2018090100 | 10 | 40 |
| 2018090101 | 10 | 40 |
| 2018090102 | 10 | 40 |
| 2018090103 | 10 | null |
+-------------+----------+---------+
Last value aggregation fails with java.lang.ArrayIndexOutOfBoundsException when
column has nulls
==============================================================================
select TO_CHAR(TO_DATE(pk1,'yyyyMMddHHmm'),'yyyyMMddHH') as t, last_value(m3)
within group (order by pk1 asc) as m3_last, sum(m2) as m2_sum from
test_last_value group by t;
java.lang.ArrayIndexOutOfBoundsException
{noformat}
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