Briefly, this error occurs when Elasticsearch’s Data Lifecycle Management (DLM) fails to roll over a data stream. This could be due to insufficient disk space, incorrect permissions, or a misconfigured DLM policy. To resolve this, you can check and free up disk space, ensure the correct permissions are set, or review and correct your DLM policy settings. Additionally, check the health of your Elasticsearch cluster to ensure it’s functioning properly.
This guide will help you check for common problems that cause the log ” DLM failed to rollver data stream [%s] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “DLM failed to rollver data stream [%s]” classname is DataLifecycleService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
*/
Index originalWriteIndex = dataStream.getWriteIndex();
try {
maybeExecuteRollover(state; dataStream);
} catch (Exception e) {
logger.error(() -> String.format(Locale.ROOT; "DLM failed to rollver data stream [%s]"; dataStream.getName()); e);
DataStream latestDataStream = clusterService.state().metadata().dataStreams().get(dataStream.getName());
if (latestDataStream != null) {
if (latestDataStream.getWriteIndex().getName().equals(originalWriteIndex.getName())) {
// data stream has not been rolled over in the meantime so record the error against the write index we
// attempted the rollover
[ratemypost]
