ECS: ECSSync migration error: MySQLSyntaxErrorException: Unknown column 'source_md5' in 'field list'

Summary: ECSSync migration instantly completes without any of the Centera clips actually being migrated.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Symptoms

ECSSync migration from Centera to ECS.

ECSSync migration instantly completes without any of the Centera clips to actually be migrated.
In /var/log/ecssync/ecs-sync.log file the following error appears:

2020-05-04 03:08:38 WARN  [sync-pool-1-t-15] SyncTask: O--! object DNVBT3VHL1NE1e2NMV9CJDMQV5FG41BCFNF5EM0AC0A4KU05821DC failed
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'source_md5' in 'field list'
        at sun.reflect.GeneratedConstructorAccessor29.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        ... <output truncated> ..

Cause

The error caused because you are using a database table that was created by a prior version of ECSSync.

Following is an example of the table created, as per the latest procedure, which doesn't include this column:

MariaDB [ecs_sync]> describe <table_name>;
+-------------------+---------------+------+-----+---------+-------+
| Field             | Type          | Null | Key | Default | Extra |
+-------------------+---------------+------+-----+---------+-------+
| source_id         | varchar(54)   | NO   | PRI | NULL    |       |
| target_id         | varchar(54)   | YES  |     | NULL    |       |
| is_directory      | int(11)       | NO   |     | NULL    |       |
| size              | bigint(20)    | YES  |     | NULL    |       |
| mtime             | datetime      | YES  |     | NULL    |       |
| status            | varchar(32)   | NO   | MUL | NULL    |       |
| transfer_start    | datetime      | YES  |     | NULL    |       |
| transfer_complete | datetime      | YES  |     | NULL    |       |
| verify_start      | datetime      | YES  |     | NULL    |       |
| verify_complete   | datetime      | YES  |     | NULL    |       |
| retry_count       | int(11)       | YES  |     | NULL    |       |
| error_message     | varchar(2048) | YES  |     | NULL    |       |
| is_source_deleted | int(11)       | YES  |     | NULL    |       |
+-------------------+---------------+------+-----+---------+-------+
13 rows in set (0.00 sec)

ECSSync version 3.2.9 added a column to the database table to track the source MD5 checksum (this is mentioned in the release notes).

 

Resolution

After upgrading to this version, you must either create a new database table or add the appropriate column by performing the following in a mysql shell:
 

alter table <table_name> add column source_md5 VARCHAR(32);

The table should look like the following example, with the additional column:

MariaDB [ecs_sync]> describe <table_name>;
+-------------------+---------------+------+-----+---------+-------+
| Field             | Type          | Null | Key | Default | Extra |
+-------------------+---------------+------+-----+---------+-------+
| source_id         | varchar(54)   | NO   | PRI | NULL    |       |
| target_id         | varchar(54)   | YES  |     | NULL    |       |
| is_directory      | int(11)       | NO   |     | NULL    |       |
| size              | bigint(20)    | YES  |     | NULL    |       |
| mtime             | datetime      | YES  |     | NULL    |       |
| status            | varchar(32)   | NO   | MUL | NULL    |       |
| transfer_start    | datetime      | YES  |     | NULL    |       |
| transfer_complete | datetime      | YES  |     | NULL    |       |
| verify_start      | datetime      | YES  |     | NULL    |       |
| verify_complete   | datetime      | YES  |     | NULL    |       |
| retry_count       | int(11)       | YES  |     | NULL    |       |
| error_message     | varchar(2048) | YES  |     | NULL    |       |
| is_source_deleted | int(11)       | YES  |     | NULL    |       |
| source_md5        | varchar(32)   | YES  |     | NULL    |       |
+-------------------+---------------+------+-----+---------+-------+
14 rows in set (0.00 sec)

MariaDB [ecs_sync]>

 

(where <table_name> is the name of your existing table).

Affected Products

ECS
Article Properties
Article Number: 000081990
Article Type: Solution
Last Modified: 05 Jan 2023
Version:  3
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.