Does close index free up disk or memory

Elastic Stack Elasticsearch
1

Hi,

I am using elasticsearch6.5 as single node, using 8GB of JVM and just 3% of memory is free. Will closing index using close API help to free heap memory .please tell what are the advantages of close index

2

Technically yes, but the warning in the 6.8 docs also applies to 6.5: indices should only be closed on a temporary basis.

Also 6.5 is long past the end of its supported life, you should upgrade as a matter of urgency.

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Thanks a lot !! It helped

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