WARNING: Version 5.4 of Elasticsearch has passed its EOL date.
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Continuing from the previous point, to
mmap effectively, Elasticsearch also requires the ability to
create many memory-mapped areas. The maximum map count check checks that
the kernel allows a process to have at least 262,144 memory-mapped areas
and is enforced on Linux only. To pass the maximum map count check, you
sysctl to be at least