Briefly, this error occurs when Elasticsearch fails to clear the finished time source from a specific job ID. This could be due to a variety of reasons such as insufficient permissions, a bug in the software, or a network issue. To resolve this issue, you could try restarting the Elasticsearch service, checking the job ID’s permissions, or updating Elasticsearch to the latest version. If the problem persists, consider checking the network connectivity or looking into the Elasticsearch logs for more detailed error information.
This guide will help you check for common problems that cause the log ” [” + jobId + “] Failed to clear finished_time; source [” + source + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: source, plugin.
Overview
When a document is sent for indexing, Elasticsearch indexes all the fields in the format of an inverted index, but it also keeps the original JSON document in a special field called _source.
Examples
Disabling source field in the index:
PUT /api-logs?pretty
{
"mappings": {
"_source": {
"enabled": false
}
}
}Store only selected fields as a part of _source field:
PUT api-logs
{
"mappings": {
"_source": {
"includes": [
"*.count",
"error_info.*"
],
"excludes": [
"error_info.traceback_message"
]
}
}
}Including only selected fields using source filtering:
GET api-logs/_search
{
"query": {
"match_all": {}
},
"_source": {
"includes": ["api_name","status_code", "*id"]
}
}Notes
The source field brings an overhead of extra storage space but serves special purposes such as:
- Return as a part of the response when a search query is executed.
- Used for reindexing purpose, update and update_by_query operations.
- Used for highlighting, if the field is not stored, it means the field is not set as “store to true” inside the mapping.
- Allows selection of fields to be returned.
The only concern with source field is the extra storage usage on disk. But this storage space used by source field can be optimized by changing compression level to best_compression. This setting is done using index.codec parameter.
Log Context
Log “[” + jobId + “] Failed to clear finished_time; source [” + source + “]” classname is TransportOpenJobAction.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
.build();
}
@Override
public void onFailure(String source; Exception e) {
logger.error("[" + jobId + "] Failed to clear finished_time; source [" + source + "]"; e);
listener.onResponse(new AcknowledgedResponse(true));
}
@Override
public void clusterStateProcessed(String source; ClusterState oldState; ClusterState newState) {
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