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移除书签BookKeeper Ledger Metadata
Pulsar stores data on BookKeeper ledgers, you can understand the contents of a ledger by inspecting the metadata attached to the ledger. Such metadata are stored on ZooKeeper and they are readable using BookKeeper APIs.
Description of current metadata:
| 范围 | Metadata name | Metadata value |
|---|---|---|
| All ledgers | application | ‘pulsar’ |
| All ledgers | component | ‘managed-ledger’, ‘schema’, ‘compacted-topic’ |
| Managed ledgers | pulsar/managed-ledger | name of the ledger |
| 游标(Cursor) | pulsar/cursor | name of the cursor |
| Compacted topic | pulsar/compactedTopic | name of the original topic |
| Compacted topic | pulsar/compactedTo | id of the last compacted message |
