- **status**: accepted --> review
- **Comment**:
https://sourceforge.net/p/opensaf/mailman/message/36033957/
---
** [tickets:#2579] imm: remove disconnected appliers**
**Status:** review
**Milestone:** 5.17.10
**Created:** Mon Sep 11, 2017 02:16 PM UTC by Zoran Milinkovic
**Last Updated:** Mon Sep 11, 2017 02:16 PM UTC
**Owner:** Zoran Milinkovic
Once an implementer is created, it resides in the system to the cluster
restart. There is no way to remove implementers from the system.
Applier is a special case of implementers and the same feature applies to
appliers.
When OpenSAF is runnning in the cloud, nodes are added and are removed from the
system, and new nodes may come with new names.
This makes a problem with appliers, which in most cases contain a node name in
an applier name.
If there are a lot of adding and removing nodes, it can come in the situation
that all 3000 implementers are allocated, and intialization of new implementers
or appliers is not possible.
Since there are a limited number of implementers, there is no need to remove
implementers from the system.
IMM should remove appliers from the system if they are not used for a certain
time.
If SC absence allowed is enabled, this time should not be less that SC absence
allowed time. Otherwise all appliers will be discarded when the system comes
back from the headless state.
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