tvalentyn commented on code in PR #39484:
URL: https://github.com/apache/beam/pull/39484#discussion_r3683094342
##########
sdks/python/container/profiler.go:
##########
@@ -334,3 +354,185 @@ func needsProcessing(binInfo os.FileInfo, path string)
bool {
// Don't regenerate when there were no updates to the profile.
return binInfo.ModTime().After(info.ModTime())
}
+
+func monitorCoredumpsLoop(ctx context.Context, logger *tools.Logger, pcfg
*ProfilerConfig) {
+ // We require the core file pattern to be configured as
"/tmp/core.%e.%p" via pipeline
+ // options experiments (which is automatically set by the Python SDK).
This ensures
+ // that core dumps are written in /tmp/ with a prefix matching "core.".
+ coreDir := "/tmp"
+ interval := 5 * time.Second
+ if pcfg.PostprocessIntervalSec > 0 {
+ interval = time.Duration(pcfg.PostprocessIntervalSec) *
time.Second
+ }
+ logger.Printf(ctx, "Monitoring directory %s for core dumps matching
prefix core. every %v", coreDir, interval)
+
+ ticker := time.NewTicker(interval)
+ defer ticker.Stop()
+
+ for {
+ select {
+ case <-ctx.Done():
+ return
+ case <-ticker.C:
+ processNewCoredumps(ctx, logger, pcfg, coreDir)
+ if isProfilerDisengaged(pcfg) {
+ return
+ }
+ }
+ }
+}
+
+func processNewCoredumps(ctx context.Context, logger *tools.Logger, pcfg
*ProfilerConfig, coreDir string) {
+ files, err := os.ReadDir(coreDir)
+ if err != nil {
+ return
+ }
+
+ prefix := "core."
Review Comment:
good point, fortunately we control the pattern, so we can specify a more
unique prefix. beam_py_coredump perhaps.
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