swamirishi commented on code in PR #8214:
URL: https://github.com/apache/ozone/pull/8214#discussion_r2032412038
##########
hadoop-hdds/rocksdb-checkpoint-differ/src/main/java/org/apache/ozone/rocksdiff/RocksDBCheckpointDiffer.java:
##########
@@ -163,6 +178,8 @@ public class RocksDBCheckpointDiffer implements
AutoCloseable,
private final long maxAllowedTimeInDag;
private final BootstrapStateHandler.Lock lock
= new BootstrapStateHandler.Lock();
+ private final Striped<ReadWriteLock> stripedSSTLock;
Review Comment:
Use IOzoneManagerLock directly. Add a resource SST_FILE_LOCK
https://github.com/apache/ozone/blob/0f52a34d0c45f5f17a568ea0d183880dfcdcd063/hadoop-ozone/common/src/main/java/org/apache/hadoop/ozone/om/lock/OzoneManagerLock.java#L571
https://github.com/apache/ozone/blob/6cce2bb5d2f8bd6b6f54362fcb256ffc5c1b2e2a/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OmMetadataManagerImpl.java#L924-L927
##########
hadoop-hdds/rocksdb-checkpoint-differ/src/main/java/org/apache/ozone/rocksdiff/RocksDBCheckpointDiffer.java:
##########
@@ -843,9 +872,15 @@ public synchronized Optional<List<String>>
getSSTDiffListWithFullPath(DifferSnap
String sstFullPath = getSSTFullPath(sst, src.getDbPath(),
dest.getDbPath());
Path link = Paths.get(sstFilesDirForSnapDiffJob,
sst + SST_FILE_EXTENSION);
- Path srcFile = Paths.get(sstFullPath);
- createLink(link, srcFile);
- return link.toString();
+ // Take a read lock on the SST FILE
+
getSSTFileLock(link.toFile().getAbsolutePath()).readLock().lock();
Review Comment:
Lock needs to be taken on the sst file name or InodeId of the file
##########
hadoop-hdds/rocksdb-checkpoint-differ/src/main/java/org/apache/ozone/rocksdiff/RocksDBCheckpointDiffer.java:
##########
@@ -217,6 +234,13 @@ public class RocksDBCheckpointDiffer implements
AutoCloseable,
TimeUnit.MILLISECONDS);
this.suspended = new AtomicBoolean(false);
+ this.stripedSSTLock = SimpleStriped.readWriteLock(
Review Comment:
Let us not do add a new configuration for locks, reuse OzoneManagerLock
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