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Briefly, this error occurs when OpenSearch is unable to send allocated dangled indices to the master node. Dangled indices are indices that exist on a node but are not part of the cluster state. This could be due to network issues, node failures, or configuration problems. To resolve this, you can try restarting the node, checking the network connectivity between nodes, or verifying the cluster’s configuration settings. If the issue persists, consider removing and re-adding the dangled indices manually.
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This guide will help you check for common problems that cause the log ” failed to send allocated dangled ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: dangled.
Log Context
Log “failed to send allocated dangled” classname is DanglingIndicesState.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
logger.trace("allocated dangled");
}
@Override
public void onFailure(Exception e) {
logger.info("failed to send allocated dangled"; e);
}
}
);
} catch (Exception e) {
logger.warn("failed to send allocate dangled"; e);
