guangxuCheng commented on a change in pull request #769: HBASE-23202
ExportSnapshot (import) will fail if copying files to root directory takes
longer than cleaner TTL
URL: https://github.com/apache/hbase/pull/769#discussion_r340045617
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File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/snapshot/SnapshotFileCache.java
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@@ -251,6 +261,31 @@ private void refreshCache() throws IOException {
this.snapshots.putAll(newSnapshots);
}
+ @VisibleForTesting
+ List<String> getSnapshotsInProgress() throws IOException {
+ List<String> snapshotInProgress = Lists.newArrayList();
+ // only add those files to the cache, but not to the known snapshots
+ Path snapshotTmpDir = new Path(snapshotDir,
SnapshotDescriptionUtils.SNAPSHOT_TMP_DIR_NAME);
+ FileStatus[] running = FSUtils.listStatus(fs, snapshotTmpDir);
+ if (running != null) {
+ for (FileStatus run : running) {
+ try {
+
snapshotInProgress.addAll(fileInspector.filesUnderSnapshot(run.getPath()));
+ } catch (CorruptedSnapshotException e) {
+ // See HBASE-16464
+ if (e.getCause() instanceof FileNotFoundException) {
+ // If the snapshot is corrupt, we will delete it
+ fs.delete(run.getPath(), true);
+ LOG.warn("delete the " + run.getPath() + " due to exception:",
e.getCause());
Review comment:
Hmmm, there maybe race condition between ExportSnapshot and SnapshotCleaner.
Copying Snapshot Manifest is a fast operation. Maybe we can add a time
threshold. When we catch CorruptedSnapshotException, if the modification time
of the snapshot folder exceeds a certain time threshold, we will delete it,
otherwise we will ignore this cleanup operation. WDYT?
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