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Briefly, this error occurs when OpenSearch is unable to list indices that are not associated with any cluster state due to issues like insufficient permissions, disk space, or network connectivity. To resolve this, you can check and adjust the user permissions, ensure there’s enough disk space, and verify network connectivity. Additionally, check the OpenSearch logs for more detailed error messages that can provide further insights into the problem.
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This guide will help you check for common problems that cause the log ” failed to list dangling indices ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: indices, dangling.
Log Context
Log “failed to list dangling indices” classname is DanglingIndicesState.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
}
}
return newIndices;
} catch (IOException e) {
logger.warn("failed to list dangling indices"; e);
return emptyMap();
}
}
/**
