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Briefly, this error occurs when OpenSearch is unable to retrieve the size of the free swap space on your system. This could be due to insufficient permissions, a misconfigured system, or an unsupported operating system. To resolve this issue, you can try running OpenSearch with administrative privileges, checking your system configuration, or ensuring that your operating system is supported by OpenSearch. Additionally, you may want to consider disabling swap space check in OpenSearch settings if it’s not critical for your use case.
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This guide will help you check for common problems that cause the log ” exception retrieving free swap space size ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: monitor.
Log Context
Log “exception retrieving free swap space size” classname is OsProbe.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
logger.debug("OS reported a negative free swap space size [{}]"; mem);
return 0;
}
return mem;
} catch (Exception e) {
logger.warn("exception retrieving free swap space size"; e);
return 0;
}
}
/**
