Lessor.ItemMap has memory leak when lease is revoked.

[qsyqian]

Bug report criteria

• This bug report is not security related, security issues should be disclosed privately via security@etcd.io.
• This is not a support request, support requests should be raised in the etcd discussion forums.
• You have read the etcd bug reporting guidelines.
• Existing open issues along with etcd frequently asked questions have been checked and this is not a duplicate.

What happened?

when lease is revoked, the lessor.ItemMap has memory leak.

What did you expect to happen?

lessor.ItemMap should be cleaned correctly when lease is revoked.

How can we reproduce it (as minimally and precisely as possible)?

more detail see #16035

Anything else we need to know?

No response

Etcd version (please run commands below)

$ etcd --version
# paste output here

$ etcdctl version
# paste output here

Etcd configuration (command line flags or environment variables)

paste your configuration here

Etcd debug information (please run commands below, feel free to obfuscate the IP address or FQDN in the output)

$ etcdctl member list -w table
# paste output here

$ etcdctl --endpoints=<member list> endpoint status -w table
# paste output here

Relevant log output

No response

[qsyqian]

• fix this in main branch lessor: fix le.itemMap leak after lease id revoked #16035
• backport to 3.5 and 3.4 after lessor: fix le.itemMap leak after lease id revoked #16035 merged
• update changelog for release 3.5 and 3.4

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed after 21 days if no further activity occurs. Thank you for your contributions.