[ZBX-15299] ERROR [file:lld_item.c,line:856] Something impossible has just happened Created: 2018 Dec 10  Updated: 2024 Aug 30  Resolved: 2019 May 01

Status: Closed
Project: ZABBIX BUGS AND ISSUES
Component/s: Server (S)
Affects Version/s: 4.0.2
Fix Version/s: None

Type: Problem report Priority: Trivial
Reporter: Andris Mednis Assignee: Viktors Tjarve
Resolution: Won't fix Votes: 2
Labels: impossible, lld
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Attachments: HTML File ZBX-15299    
Issue Links:
Duplicate
is duplicated by ZBX-15698 zabbix_server [16240]: ERROR [file:ll... Closed
is duplicated by ZBX-15502 [file:lld_item.c,line:3547] Something... Closed
is duplicated by ZBX-17116 ERROR [file:lld_item.c,line:866] Some... Closed
is duplicated by ZBX-22031 Error "Something impossible has just ... Closed
is duplicated by ZBX-22177 ERROR [file:lld_item.c,line:862] Some... Closed
Team: Team A
Sprint: Sprint 47, Dec 2018, Sprint 48, Jan 2019, Sprint 49 (Feb 2019), Sprint 50 (Mar 2019), Sprint 51 (Apr 2019)
Story Points: 1

 Description   

Creating ZBX based on https://www.zabbix.com/forum/zabbix-help/370461-error-file-lld_item-c-line-856-something-impossible-has-just-happened.

"Hello,
I've upgraded from 3.4.15 to 4.0.2. The upgrade process was fine and I had no problems.

After start the server I see a lot of errors like this in my log:

zabbix_server [11364]: ERROR [file:lld_item.c,line:856] Something impossible has just happened.
 11364:20181210:123048.043 === Backtrace: ===
 11364:20181210:123048.043 12: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](zbx_backtrace+0x35) [0x55b61f6584c5]
 11364:20181210:123048.043 11: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](+0x155b8a) [0x55b61f6bcb8a]
 11364:20181210:123048.043 10: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](lld_update_items+0x1f5) [0x55b61f6c86c4]
 11364:20181210:123048.043 9: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](lld_process_discovery_rule+0x471) [0x55b61f6b9db5]
 11364:20181210:123048.043 8: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](zbx_preprocess_item_value+0x94) [0x55b61f5f4293]
 11364:20181210:123048.043 7: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](+0x4d188) [0x55b61f5b4188]
 11364:20181210:123048.043 6: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](poller_thread+0x1b7) [0x55b61f5b4ff9]
 11364:20181210:123048.043 5: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](zbx_thread_start+0x37) [0x55b61f665af8]
 11364:20181210:123048.044 4: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](MAIN_ZABBIX_ENTRY+0x9b3) [0x55b61f59fde8]
 11364:20181210:123048.044 3: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](daemon_start+0x31b) [0x55b61f657d16]
 11364:20181210:123048.044 2: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443 sec, getting values](main+0x312) [0x55b61f59f433]
 11364:20181210:123048.044 1: /lib64/libc.so.6(__libc_start_main+0xf5) [0x7fda878a53d5]
 11364:20181210:123048.044 0: /usr/sbin/zabbix_server: poller #8 [got 6 values in 0.009443

Do you have any suggestion on what is it and how to fix?

My OS is 7.6.1810, kernel version is 3.10.0-957.1.3.el7.x86_64
I've updated all packages to date and Zabbix setup was made from the official repo

Thanks

 Comments   
Comment by Andris Zeila [ 2019 Jan 11 ]

I'm wondering if the warning

zabbix_server [11364]: ERROR [file:lld_item.c,line:856] Something impossible has just happened.

Always has the same line number or it is generated from multiple places. Is it possible to get the log file?

Comment by Viktors Tjarve [ 2019 Apr 25 ]

Issue caused by disabling foreign key constraint.

Won't fix.

Comment by Vladislavs Sokurenko [ 2019 Jul 11 ]

If anyone experience the issue, please double check that database schema is correct:

zabbix=> \d+ item_preproc;
                                                     Table "public.item_preproc"
        Column        |          Type          | Collation | Nullable |        Default        | Storage  | Stats target | Description 
----------------------+------------------------+-----------+----------+-----------------------+----------+--------------+-------------
 item_preprocid       | bigint                 |           | not null |                       | plain    |              | 
 itemid               | bigint                 |           | not null |                       | plain    |              | 
 step                 | integer                |           | not null | 0                     | plain    |              | 
 type                 | integer                |           | not null | 0                     | plain    |              | 
 params               | text                   |           | not null | ''::text              | extended |              | 
 error_handler        | integer                |           | not null | 0                     | plain    |              | 
 error_handler_params | character varying(255) |           | not null | ''::character varying | extended |              | 
Indexes:
    "item_preproc_pkey" PRIMARY KEY, btree (item_preprocid)
    "item_preproc_1" btree (itemid, step)
Foreign-key constraints:
    "c_item_preproc_1" FOREIGN KEY (itemid) REFERENCES items(itemid) ON DELETE CASCAD
Comment by Luiz Costa [ 2022 Oct 25 ]

Its work's for me.

 

 

Thanks!

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