errose28 commented on code in PR #10214:
URL: https://github.com/apache/ozone/pull/10214#discussion_r3274464012
##########
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/ozoneimpl/ContainerScanHelper.java:
##########
@@ -115,8 +115,17 @@ public void scanMetadata(Container<?> container)
logScanCompleted(containerData, now);
}
+ /**
+ * Marks container UNHEALTHY when the scan reports real errors.
+ * If every scan error is related to file-descriptor exhaustion, return
without marking container unhealthy.
+ */
public void handleUnhealthyScanResult(ContainerData containerData,
ScanResult result) throws IOException {
long containerID = containerData.getContainerID();
+ if (ScanTransientIOUtil.scanErrorsAreOnlyTooManyOpenFiles(result)) {
+ log.warn("Skipped marking container UNHEALTHY [{}]: scan failed due to
transient " +
+ "file descriptor exhaustion ('Too many open files'). {}",
containerID, result);
+ return;
+ }
Review Comment:
> currently handleUnhealthyScanResult is called after
updateContainerChecksum, is this order on purpose?
After reconciliation, we scan and update checksums of containers even if
they are unhealthy, since we still need the ability to repair them. We don't
want to exit early and not update the checksum if the container is unhealthy.
Not sure if I understood the question specifically though.
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