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fix: Start without cache file (#2976)

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#2830 introduced a bug that clio couldn't start without having a cache
file. This PR fixes the problem.
This commit is contained in:
Sergey Kuznetsov
2026-03-06 15:59:27 +00:00
committed by GitHub
parent 3737459d09
commit 05e52ee7a4
20 changed files with 435 additions and 201 deletions
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33
src/cluster/WriterDecider.cpp
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@@ -84,21 +84,36 @@ WriterDecider::onNewState(
return *lhs.uuid < *rhs.uuid;
});
auto const it = std::ranges::find_if(clusterData, [](ClioNode const& node) {
return node.dbRole == ClioNode::DbRole::NotWriter or
node.dbRole == ClioNode::DbRole::Writer;
auto it = std::ranges::find_if(clusterData, [](ClioNode const& node) {
return node.etlStarted and node.cacheIsFull and
(node.dbRole == ClioNode::DbRole::NotWriter or
node.dbRole == ClioNode::DbRole::Writer);
});
if (it == clusterData.end()) {
// No writer nodes in the cluster yet
auto electNode = [&selfId, &writerState](auto it) {
if (*it->uuid == *selfId) {
writerState->startWriting();
} else {
writerState->giveUpWriting();
}
};
if (it != clusterData.end()) {
electNode(it);
return;
}
if (*it->uuid == *selfId) {
writerState->startWriting();
} else {
writerState->giveUpWriting();
// Try to find a node with at least started ETL
it = std::ranges::find_if(clusterData, [](ClioNode const& node) {
return node.etlStarted and
(node.dbRole == ClioNode::DbRole::NotWriter or
node.dbRole == ClioNode::DbRole::Writer);
});
if (it != clusterData.end()) {
electNode(it);
return;
}
writerState->giveUpWriting();
}
);
}