diqiu50 commented on code in PR #10742:
URL: https://github.com/apache/gravitino/pull/10742#discussion_r3083592466
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catalogs/hive-metastore-common/src/main/java/org/apache/gravitino/hive/kerberos/FetchFileUtils.java:
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@@ -19,23 +19,34 @@
package org.apache.gravitino.hive.kerberos;
import java.io.File;
+import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.file.Files;
+import java.nio.file.StandardCopyOption;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
import org.apache.commons.io.FileUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
public class FetchFileUtils {
+ /**
+ * Per-destination lock map used to serialize concurrent symlink creation
for the same keytab
+ * file. Keyed by the normalized absolute destination path string to avoid
races caused by
+ * different path spellings referring to the same file.
+ */
+ private static final ConcurrentHashMap<String, Object> SYMLINK_LOCKS = new
ConcurrentHashMap<>();
Review Comment:
I added a function removeLock, which is called when the Kerberos client
closes.
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