Issue #4487 has been updated by Marek Wodzinski.

I can confirm that. In my case it occurs on both backends: mysql and sqlite. In 
case of using sqlite, it looks like there is no limit for length of this field, 
so puppet agent which tries to use stored variables eats all memory after some 
time.
I'm using puppet from debian lenny-backports (puppet 2.6.2-1~bpo50+1)
    mysql> select name, length(environment) from hosts;
    +----------------------+---------------------+
    | name                 | length(environment) |
    +----------------------+---------------------+
    | debian-1.example.com |               65535 |
    | debian-3.example.com |               65535 |
    | debian-4.example.com |               65535 |
    | debian-2.example.com |               65535 |
    +----------------------+---------------------+
    4 rows in set (0.00 sec)
----------------------------------------
Bug #4487: Environment column in hosts table updating incorrectly
https://projects.puppetlabs.com/issues/4487

Author: Jason Koppe
Status: Re-opened
Priority: High
Assignee: Matt Robinson
Category: 
Target version: 
Affected Puppet version: 2.6.0
Keywords: storedconfig, mysql, environment, hosts table
Branch: http://github.com/MarkusQ/puppet/tree/ticket/2.6.x/4487


Posted on puppet-users at 
[thread/7237b49342ff9890](http://groups.google.com/group/puppet-users/browse_thread/thread/7237b49342ff9890)

Below I null out the environment column, show that it's null for a 
particular host, then run puppetd a few times on the host. 

<pre>
mysql for r...@localhost on indadm1> select * from hosts where name like 
'iad-web2%';
+----+---------------------+---------------+-------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
| id | name                | ip            | environment | last_compile        
| last_freshcheck | last_report | updated_at          |source_file_id | 
created_at          |
+----+---------------------+---------------+-------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
|  9 | iad-web2.indeed.net | 10.24.186.136 | NULL        | 2010-08-06 03:31:23 
| NULL            | NULL        | 2010-08-06 03:31:23 | NULL | 2010-06-08 
19:47:22 |
+----+---------------------+---------------+-------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
1 row in set (0.00 sec)

mysql for r...@localhost on indadm1> select * from hosts where name 
like'iad-web2%';
+----+---------------------+---------------+----------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
| id | name                | ip            | environment    | last_compile      
  | last_freshcheck | last_report | updated_at          | source_file_id | 
created_at          |
+----+---------------------+---------------+----------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
|  9 | iad-web2.indeed.net | 10.24.186.136 | --- production | 2010-08-06 
03:31:23 | NULL            | NULL        | 2010-08-06 03:32:42 | NULL | 
2010-06-08 19:47:22 |
+----+---------------------+---------------+----------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
1 row in set (0.00 sec)

mysql for r...@localhost on indadm1> select * from hosts where name like 
'iad-web2%';
+----+---------------------+---------------+----------------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
| id | name                | ip            | environment          | 
last_compile        | last_freshcheck | last_report | updated_at          | 
source_file_id | created_at          |
+----+---------------------+---------------+----------------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
|  9 | iad-web2.indeed.net | 10.24.186.136 | --- "--- production" | 2010-08-06 
03:32:50 | NULL            | NULL        | 2010-08-06 03:32:50 |           NULL 
| 2010-06-08 19:47:22 |
+----+---------------------+---------------+----------------------+---------------------+-----------------+-------------+---------------------+----------------+---------------------+
1 row in set (0.00 sec)

 </pre>


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