Github user enixon commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/619#discussion_r217561012
--- Diff: src/java/main/org/apache/zookeeper/server/SnapshotFormatter.java
---
@@ -34,79 +36,133 @@
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.zookeeper.data.StatPersisted;
import org.apache.zookeeper.server.persistence.FileSnap;
+import org.apache.zookeeper.server.persistence.Util;
+import org.json.simple.JSONValue;
+
+import static
org.apache.zookeeper.server.persistence.FileSnap.SNAPSHOT_FILE_PREFIX;
/**
* Dump a snapshot file to stdout.
+ *
+ * For JSON format, followed https://dev.yorhel.nl/ncdu/jsonfmt
*/
@InterfaceAudience.Public
public class SnapshotFormatter {
+ private static Integer INODE_IDX = 1000;
--- End diff --
Per https://dev.yorhel.nl/ncdu/jsonfmt:
"Inode number as reported by lstat().st_ino. Together with the Device ID
this uniquely identifies a file in this dump. In the case of hard links, two
objects may appear with the same (dev,ino) combination. A value of 0 is assumed
if this field is absent. This is currently (ncdu 1.9-1.13) not a problem as
long as the hlnkc field is false, otherwise it will consider everything with
the same dev and empty ino values as a single hardlinked file. Accepted values
are in the range of 0 <= ino < 2^64."
For us, it's just an arbitrary counter to mark each znode as a unique
entity.
---
