LegacyHierarchicalLedgerRangeIterator (Pulsar Metadata 2.10.3.4 API)

java.lang.Object
- org.apache.pulsar.metadata.bookkeeper.LegacyHierarchicalLedgerRangeIterator

All Implemented Interfaces:

org.apache.bookkeeper.meta.LedgerManager.LedgerRangeIterator
```
public class LegacyHierarchicalLedgerRangeIterator
extends java.lang.Object
implements org.apache.bookkeeper.meta.LedgerManager.LedgerRangeIterator
```
Hierarchical Ledger Manager which manages ledger meta in zookeeper using 2-level hierarchical znodes.
LegacyHierarchicalLedgerManager splits the generated id into 3 parts (2-4-4):
```
<level1 (2 digits)><level2 (4 digits)><level3 (4 digits)>
```
These 3 parts are used to form the actual ledger node path used to store ledger metadata:
```
(ledgersRootPath)/level1/level2/L(level3)
```
E.g Ledger 0000000001 is split into 3 parts 00, 0000, 0001, which is stored in (ledgersRootPath)/00/0000/L0001. So each znode could have at most 10000 ledgers, which avoids errors during garbage collection due to lists of children that are too long.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  LegacyHierarchicalLedgerRangeIterator(MetadataStore store, java.lang.String ledgersRoot)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  boolean hasNext()
  
  org.apache.bookkeeper.meta.LedgerManager.LedgerRange next()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LegacyHierarchicalLedgerRangeIterator

public LegacyHierarchicalLedgerRangeIterator(MetadataStore store,
                                             java.lang.String ledgersRoot)

Method Detail
- hasNext
```
public boolean hasNext()
                throws java.io.IOException
```
  Specified by:
  
  hasNext in interface org.apache.bookkeeper.meta.LedgerManager.LedgerRangeIterator
  
  Throws:
  
  java.io.IOException
- next
```
public org.apache.bookkeeper.meta.LedgerManager.LedgerRange next()
                                                          throws java.io.IOException
```
  Specified by:
  
  next in interface org.apache.bookkeeper.meta.LedgerManager.LedgerRangeIterator
  
  Throws:
  
  java.io.IOException