sunhelly commented on code in PR #4437:
URL: https://github.com/apache/hbase/pull/4437#discussion_r876522688
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hbase-server/src/main/java/org/apache/hadoop/hbase/master/snapshot/SnapshotFileCache.java:
##########
@@ -192,39 +193,43 @@ public Iterable<FileStatus>
getUnreferencedFiles(Iterable<FileStatus> files,
if (snapshotManager != null) {
lock = snapshotManager.getTakingSnapshotLock().writeLock();
}
- if (lock == null || lock.tryLock()) {
- try {
- if (snapshotManager != null && snapshotManager.isTakingAnySnapshot()) {
- LOG.warn("Not checking unreferenced files since snapshot is running,
it will "
- + "skip to clean the HFiles this time");
- return unReferencedFiles;
- }
- ImmutableSet<String> currentCache = cache;
- for (FileStatus file : files) {
- String fileName = file.getPath().getName();
- if (!refreshed && !currentCache.contains(fileName)) {
- synchronized (this) {
- refreshCache();
- currentCache = cache;
- refreshed = true;
- }
- }
- if (currentCache.contains(fileName)) {
- continue;
+ try {
+ if (lock == null || lock.tryLock(30000, TimeUnit.MILLISECONDS)) {
+ try {
+ if (snapshotManager != null &&
snapshotManager.isTakingAnySnapshot()) {
+ LOG.warn("Not checking unreferenced files since snapshot is
running, it will "
+ + "skip to clean the HFiles this time");
+ return unReferencedFiles;
}
- if (snapshotsInProgress == null) {
- snapshotsInProgress = getSnapshotsInProgress();
+ ImmutableSet<String> currentCache = cache;
+ for (FileStatus file : files) {
+ String fileName = file.getPath().getName();
+ if (!refreshed && !currentCache.contains(fileName)) {
+ synchronized (this) {
+ refreshCache();
+ currentCache = cache;
+ refreshed = true;
+ }
+ }
+ if (currentCache.contains(fileName)) {
+ continue;
+ }
+ if (snapshotsInProgress == null) {
+ snapshotsInProgress = getSnapshotsInProgress();
+ }
+ if (snapshotsInProgress.contains(fileName)) {
+ continue;
+ }
+ unReferencedFiles.add(file);
}
- if (snapshotsInProgress.contains(fileName)) {
- continue;
+ } finally {
+ if (lock != null) {
+ lock.unlock();
}
- unReferencedFiles.add(file);
- }
- } finally {
- if (lock != null) {
- lock.unlock();
}
}
+ } catch (InterruptedException e) {
+ LOG.warn("Try taking snapshot write lock interrupted");
Review Comment:
Got it, thanks.
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