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Date: Fri, 30 Jun 2017 07:38:02 +0000 (UTC)
From: "ZhaoYang (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Comment Edited] (CASSANDRA-13592) Null Pointer exception at
 SELECT JSON statement
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archived-at: Fri, 30 Jun 2017 07:38:11 -0000


    [ https://issues.apache.org/jira/browse/CASSANDRA-13592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16069565#comment-16069565 ] 

ZhaoYang edited comment on CASSANDRA-13592 at 6/30/17 7:37 AM:
---------------------------------------------------------------

|| source || junit-result || dtest-result||
| [trunk|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592] | [junit|https://circleci.com/gh/jasonstack/cassandra/84]  | {{cql_tests.py:SlowQueryTester.local_query_test}} failed on trunk
{{bootstrap_test.TestBootstrap.simultaneous_bootstrap_test}}[known|https://issues.apache.org/jira/browse/CASSANDRA-13506]
| 
| [3.11|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592-cassandra-3.11] |  [junit|https://circleci.com/gh/jasonstack/cassandra/82] | {{topology_test.TestTopology.size_estimates_multidc_test}}[known|https://issues.apache.org/jira/browse/CASSANDRA-13229]
{{cqlsh_tests.cqlsh_tests.TestCqlsh.test_describe}} [known|https://issues.apache.org/jira/browse/CASSANDRA-13250] | 
| [3.0|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592-cassandra-3.0] |  [junit|https://circleci.com/gh/jasonstack/cassandra/83] | | 
| [2.2|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592-cassandra-2.2] |  [junit|https://circleci.com/gh/jasonstack/cassandra/85] | passed | 

1. in {{listType, mapType, setType, TupleType}}.toJSONString(), keep buffer position the same.
2. change {{DurationType}}.toJSONString() to {{return "\"" +.... +"\"";}} (with double-quote) to be consistent with user json input
3. change {{EmptyType}}.toJSONString() to directly {{return "\"\"";}}, otherwise parent method throws NPE.


was (Author: jasonstack):
|| source || junit-result || dtest-result||
| [trunk|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592] | [junit|https://circleci.com/gh/jasonstack/cassandra/84] | | 
| [3.11|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592-cassandra-3.11] |  [junit|https://circleci.com/gh/jasonstack/cassandra/82] | | 
| [3.0|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592-cassandra-3.0] |  [junit|https://circleci.com/gh/jasonstack/cassandra/83] | | 
| [2.2|https://github.com/jasonstack/cassandra/commits/CASSANDRA-13592-cassandra-2.2] |  [junit|https://circleci.com/gh/jasonstack/cassandra/85] | | 

1. in {{listType, mapType, setType, TupleType}}.toJSONString(), keep buffer position the same.
2. change {{DurationType}}.toJSONString() to {{return "\"" +.... +"\"";}} (with double-quote) to be consistent with user json input
3. change {{EmptyType}}.toJSONString() to directly {{return "\"\"";}}, otherwise parent method throws NPE.

> Null Pointer exception at SELECT JSON statement
> -----------------------------------------------
>
>                 Key: CASSANDRA-13592
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13592
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>         Environment: Debian Linux
>            Reporter: Wyss Philipp
>            Assignee: ZhaoYang
>              Labels: beginner
>         Attachments: system.log
>
>
> A Nulll pointer exception appears when the command
> {code}
> SELECT JSON * FROM examples.basic;
> ---MORE---
> <Error from server: code=0000 [Server error] message="java.lang.NullPointerException">
> Examples.basic has the following description (DESC examples.basic;):
> CREATE TABLE examples.basic (
>     key frozen<tuple<uuid, int>> PRIMARY KEY,
>     wert text
> ) WITH bloom_filter_fp_chance = 0.01
>     AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
>     AND comment = ''
>     AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'}
>     AND compression = {'chunk_length_in_kb': '64', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'}
>     AND crc_check_chance = 1.0
>     AND dclocal_read_repair_chance = 0.1
>     AND default_time_to_live = 0
>     AND gc_grace_seconds = 864000
>     AND max_index_interval = 2048
>     AND memtable_flush_period_in_ms = 0
>     AND min_index_interval = 128
>     AND read_repair_chance = 0.0
>     AND speculative_retry = '99PERCENTILE';
> {code}
> The error appears after the ---MORE--- line.
> The field "wert" has a JSON formatted string.


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