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Cluster: always add PFAIL nodes at end of gossip section.

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To rely on the fact that nodes in PFAIL state will be shared around by
randomly adding them in the gossip section is a weak assumption,
especially after changes related to sending less ping/pong packets.

We want to always include gossip entries for all the nodes that are in
PFAIL state, so that the PFAIL -> FAIL state promotion can happen much
faster and reliably.

Related to #3929.
This commit is contained in:
antirez
2017-04-14 13:39:49 +02:00
parent 8c829d9e43
commit 02777bb252
2 changed files with 71 additions and 23 deletions
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2
src/cluster.h
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@ -165,6 +165,8 @@ typedef struct clusterState {
/* Messages received and sent by type. */
long long stats_bus_messages_sent[CLUSTERMSG_TYPE_COUNT];
long long stats_bus_messages_received[CLUSTERMSG_TYPE_COUNT];
long long stats_pfail_nodes; /* Number of nodes in PFAIL status,
excluding nodes without address. */
} clusterState;
/* Redis cluster messages header */