core/bloombits: fix deadlock when matcher session hits an error #347
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When MatcherSession encounters an error, it attempts to close the session. Closing waits for all goroutines to finish, including the 'distributor'. However, the distributor will not exit until all requests have returned. This patch fixes the issue by delivering the (empty) result to the distributor before calling Close().
msmania
requested review from
aaronbuchwald,
ceyonur and
darioush
as code owners
aaronbuchwald
approved these changes
Sep 26, 2023
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Why this should be merged
A block-pruned node encounters deadlock if a node receives
eth_getLogsfor a pruned block. The node will eventually be killed because deadlocked goroutines do not release system resources.With this patch, such
eth_getLogsimmediately returns a jsonrpc error.How this works
This patch has been merged in the upstream and will be included in the next version v1.13.2. More technical details are described in the original PR ethereum/go-ethereum#28184.
Corresponding PR in Subnet EVM: ava-labs/subnet-evm#899
How this was tested
We had this deadlock in our DFK Chain node. This patch fixed it.