[jira] [Created] (MINIFICPP-1694) Remove false positive error log messages

["Gábor Gyimesi (Jira)" <ji...@apache.org>]

Gábor Gyimesi created MINIFICPP-1694:
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             Summary: Remove false positive error log messages
                 Key: MINIFICPP-1694
                 URL: https://issues.apache.org/jira/browse/MINIFICPP-1694
             Project: Apache NiFi MiNiFi C++
          Issue Type: Bug
            Reporter: Gábor Gyimesi
            Assignee: Gábor Gyimesi


There are some error messages in MiNiFi that do not actually signal a real error. There were instances when users observed these errors while debugging a separate issue and they were suspicious that these might be related so these messages can be quite misleading. Most common of these can be observed at startup:
 * Happens when "type" field is used instead of "class" which is also acceptable:

{code:java}
[2021-11-29 13:43:52.892] [org::apache::nifi::minifi::core::YamlConfiguration] [error] Unable to parse configuration file for component named 'AzureStorageCredentialsService' as required field 'class' is missing [in 'Controller Services' section of configuration file] [line:column, pos at 52:2, 1660] {code}
 * This should probably be a warning if no configuration file is defined and the default is not available:

{code:java}
[2021-11-29 13:43:52.898] [org::apache::nifi::minifi::Properties] [error] load configure file failed{code}
 * When component state not available anymore this can be also ignored, so it should not be an error:

{code:java}
[2021-11-29 13:43:52.919] [org::apache::nifi::minifi::controllers::RocksDbPersistableKeyValueStoreService] [error] Failed to Get key 94b8e610-b4ed-1ec9-b26f-c839931bf3e2 from RocksDB database at corecomponentstate, error: (null){code}



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