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Multiple Queue improvements: LevelDB Wait on empty, shutdown empty shadow level queue, reduce goroutines etc (#15693)

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* move shutdownfns, terminatefns and hammerfns out of separate goroutines

Coalesce the shutdownfns etc into a list of functions that get run at shutdown
rather then have them run at goroutines blocked on selects.

This may help reduce the background select/poll load in certain
configurations.

* The LevelDB queues can actually wait on empty instead of polling

Slight refactor to cause leveldb queues to wait on empty instead of polling.

* Shutdown the shadow level queue once it is empty

* Remove bytefifo additional goroutine for readToChan as it can just be run in run

* Remove additional removeWorkers goroutine for workers

* Simplify the AtShutdown and AtTerminate functions and add Channel Flusher

* Add shutdown flusher to CUQ

* move persistable channel shutdown stuff to Shutdown Fn

* Ensure that UPCQ has the correct config

* handle shutdown during the flushing

* reduce risk of race between zeroBoost and addWorkers

* prevent double shutdown

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-05-15 15:22:26 +01:00 • committed by GitHub
parent 9f19c2b8cc
commit ba526ceffe
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 598 additions and 412 deletions
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8
modules/indexer/code/indexer.go
View file

@ -115,7 +115,13 @@ func Init() {
ctx, cancel := context.WithCancel(context.Background())
graceful.GetManager().RunAtTerminate(ctx, func() {
graceful.GetManager().RunAtTerminate(func() {
select {
case <-ctx.Done():
return
default:
}
cancel()
log.Debug("Closing repository indexer")
indexer.Close()
log.Info("PID: %d Repository Indexer closed", os.Getpid())

4
modules/indexer/issues/indexer.go
View file

@ -160,7 +160,7 @@ func InitIssueIndexer(syncReindex bool) {
}
populate = !exist
holder.set(issueIndexer)
graceful.GetManager().RunAtTerminate(context.Background(), func() {
graceful.GetManager().RunAtTerminate(func() {
log.Debug("Closing issue indexer")
issueIndexer := holder.get()
if issueIndexer != nil {
@ -170,7 +170,7 @@ func InitIssueIndexer(syncReindex bool) {
})
log.Debug("Created Bleve Indexer")
case "elasticsearch":
graceful.GetManager().RunWithShutdownFns(func(_, atTerminate func(context.Context, func())) {
graceful.GetManager().RunWithShutdownFns(func(_, atTerminate func(func())) {
issueIndexer, err := NewElasticSearchIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueIndexerName)
if err != nil {
log.Fatal("Unable to initialize Elastic Search Issue Indexer at connection: %s Error: %v", setting.Indexer.IssueConnStr, err)