GitHub user anubhav100 opened a pull request:
https://github.com/apache/carbondata/pull/1486
[CARBONDATA-1694] [BugFix] Resolved bug for Incorrect exception on presto
CLI when a column is dropped from carbon
**Steps to reproduce** : same as
https://issues.apache.org/jira/browse/CARBONDATA-1694
**Reason:** table key still exists in carboncache it there is a change in
metadatadirectory of carbon that change happens when ever we execute any alter
table command on a table from carbon using thrift server
**How To Verify This Pr*:* same as
https://issues.apache.org/jira/browse/CARBONDATA-1694
**Testing Is Done Manually** :
**Here Are Logs**
1.**created a table in carbondata**
0: jdbc:hive2://localhost:10000> create table carbontableforalter(id
int,name string) stored by 'carbondata';
+---------+--+
| Result |
+---------+--+
+---------+--+
No rows selected (0.11 seconds)
0: jdbc:hive2://localhost:10000> insert into carbontableforalter
values(1,'anubhav');
+---------+--+
| Result |
+---------+--+
+---------+--+
2. **goes to presto cli and select it**
presto:default> select * from carbontableforalter;
id | name
----+---------
1 | anubhav
(1 row)
Query 20171110_144215_00002_yykz4, FINISHED, 1 node
Splits: 17 total, 17 done (100.00%)
0:00 [1 rows, 4KB] [3 rows/s, 14.3KB/s
3.**goes back to carbon and drop a column using beeline**
0: jdbc:hive2://localhost:10000> alter table carbontableforalter drop
columns(id);
+---------+--+
| Result |
+---------+--+
+---------+--+
No rows selected (0.155 seconds)
0: jdbc:hive2://localhost:10000> select * from carbontableforalter;
+----------+--+
| name |
+----------+--+
| anubhav |
+----------+--+
1 row selected (0.158 seconds)
4.**goes back to presto cli to select the table**
presto:default> select * from carbontableforalter;
name
---------
anubhav
(1 row)
Query 20171110_144232_00003_yykz4, FINISHED, 1 node
Splits: 17 total, 17 done (100.00%)
0:00 [1 rows, 4KB] [4 rows/s, 16.9KB/s]
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/anubhav100/incubator-carbondata
CARBONDATA-1694
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/1486.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1486
----
commit 34054c84cb10114b0b10f674e6f75f5b28129b2d
Author: anubhav100 <[email protected]>
Date: 2017-11-10T14:17:25Z
resolved bug for Incorrect exception on presto CLI while executing select
query after applying alter drop column query on a table
----
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