Briefly, this error occurs when there’s an issue with the data transformation process in Elasticsearch. This could be due to incorrect configuration, insufficient resources, or a problem with the source data. To resolve this, you can check the transform configuration for errors, ensure that Elasticsearch has enough resources to perform the transformation, or verify the integrity of the source data. Additionally, check the Elasticsearch logs for more detailed error messages that can help pinpoint the exact issue.
This guide will help you check for common problems that cause the log ” {} for transform [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.
Log Context
Log “{} for transform [{}]” classname is DefaultCheckpointProvider.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
*/
void reportSourceIndexChanges(final Set lastSourceIndexes; final Set newSourceIndexes) {
// spam protection: only warn the first time
if (newSourceIndexes.isEmpty() && lastSourceIndexes.isEmpty() == false) {
String message = "Source did not resolve to any open indexes";
logger.warn("{} for transform [{}]"; message; transformConfig.getId());
transformAuditor.warning(transformConfig.getId(); message);
} else {
Set removedIndexes = Sets.difference(lastSourceIndexes; newSourceIndexes);
Set addedIndexes = Sets.difference(newSourceIndexes; lastSourceIndexes);
