Briefly, this error occurs when Elasticsearch’s Data Lifecycle Management (DLM) faces an issue while trying to rollover a data stream. This could be due to incorrect configurations, insufficient permissions, or a problem with the underlying hardware. To resolve this, you can check and correct the DLM policy configurations, ensure the user has the necessary permissions, or investigate the hardware for any issues. Additionally, checking the Elasticsearch logs can provide more detailed information about the error, which can help in troubleshooting.
This guide will help you check for common problems that cause the log ” DLM encountered an error trying to rollover data steam [%s] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “DLM encountered an error trying to rollover data steam [%s]” classname is DataLifecycleService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
listener.onResponse(null);
}
@Override
public void onFailure(Exception e) {
logger.error(() -> Strings.format("DLM encountered an error trying to rollover data steam [%s]"; rolloverTarget); e);
DataStream dataStream = clusterService.state().metadata().dataStreams().get(rolloverTarget);
if (dataStream == null || dataStream.getWriteIndex().getName().equals(writeIndexName) == false) {
// the data stream has another write index so no point in recording an error for the previous write index we were
// attempting to rollover
// if there are persistent issues with rolling over this data stream; the next DLM run will attempt to rollover the
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