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lease: fix memory leak in LeaseGrant #11731

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merged 1 commit into from
Mar 29, 2020

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tangcong
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@tangcong tangcong commented Mar 29, 2020

fix issue #11730 #11495

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tangcong commented Mar 29, 2020

leader can call leaseExpiredNotifier.Unregister() to pop item when lessor is revoked, but follower node has no way to pop it. it is not necessary to register it into the queue when lessor is not primary. if leader change, promote method can rebuild it in new leader and demote method can clear leaseExpiredNotifier in old leader.
other methods,it can also solve issues by removing item from leaseExpiredNotifier when executing lease revoking commands.

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codecov-io commented Mar 29, 2020

Codecov Report

Merging #11731 into master will decrease coverage by 0.38%.
The diff coverage is 100.00%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master   #11731      +/-   ##
==========================================
- Coverage   66.58%   66.19%   -0.39%     
==========================================
  Files         403      403              
  Lines       36763    36787      +24     
==========================================
- Hits        24477    24351     -126     
- Misses      10779    10942     +163     
+ Partials     1507     1494      -13     
Impacted Files Coverage Δ
lease/lessor.go 88.00% <100.00%> (+0.08%) ⬆️
auth/store.go 52.61% <0.00%> (-22.78%) ⬇️
client/client.go 69.60% <0.00%> (-14.38%) ⬇️
proxy/grpcproxy/register.go 72.50% <0.00%> (-10.00%) ⬇️
clientv3/concurrency/election.go 79.68% <0.00%> (-2.35%) ⬇️
clientv3/maintenance.go 40.81% <0.00%> (-2.05%) ⬇️
etcdserver/api/v3rpc/watch.go 85.61% <0.00%> (-1.41%) ⬇️
etcdserver/cluster_util.go 64.18% <0.00%> (-0.94%) ⬇️
proxy/grpcproxy/lease.go 79.18% <0.00%> (-0.91%) ⬇️
clientv3/watch.go 90.60% <0.00%> (-0.84%) ⬇️
... and 15 more

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@tangcong tangcong changed the title lease: fix memory leak in LeaseGrant when node is follower lease: fix memory leak in LeaseGrant Mar 29, 2020
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great find. thanks for the fix

@gyuho gyuho merged commit 2ffbde8 into etcd-io:master Mar 29, 2020
@tangcong tangcong deleted the fix-lease-memory-leak branch February 26, 2021 18:59
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ahrtr commented Mar 24, 2021

The fix is included in v3.4.6 (2020-03-29).

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4 participants