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https://github.com/fluencelabs/redis
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Cluster: update our currentEpoch when a greater one is seen.
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d426ada891
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@ -873,6 +873,7 @@ int clusterProcessPacket(clusterLink *link) {
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uint32_t totlen = ntohl(hdr->totlen);
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uint16_t type = ntohs(hdr->type);
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uint16_t flags = ntohs(hdr->flags);
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uint64_t senderCurrentEpoch, senderConfigEpoch;
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clusterNode *sender;
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redisLog(REDIS_DEBUG,"--- Processing packet of type %d, %lu bytes",
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@ -909,9 +910,17 @@ int clusterProcessPacket(clusterLink *link) {
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if (totlen != explen) return 1;
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}
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/* Process packets by type. */
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/* Check if the sender is known.
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* If it is, update our currentEpoch to its epoch if greater than our. */
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sender = clusterLookupNode(hdr->sender);
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if (sender && !(sender->flags & REDIS_NODE_HANDSHAKE)) {
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senderCurrentEpoch = ntohu64(hdr->currentEpoch);
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senderConfigEpoch = ntohu64(hdr->configEpoch);
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if (senderCurrentEpoch > server.cluster->currentEpoch)
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server.cluster->currentEpoch = senderCurrentEpoch;
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}
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/* Process packets by type. */
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if (type == CLUSTERMSG_TYPE_PING || type == CLUSTERMSG_TYPE_MEET) {
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int update_config = 0;
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redisLog(REDIS_DEBUG,"Ping packet received: %p", (void*)link->node);
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