Package com.linkedin.davinci.store.rocksdb

Class RocksDBThrottler

java.lang.Object

com.linkedin.davinci.store.rocksdb.RocksDBThrottler

public class RocksDBThrottler
extends java.lang.Object

This class is used to throttle RocksDB operations. So far, it only supports throttling open operations. check RocksDBServerConfig.ROCKSDB_DB_OPEN_OPERATION_THROTTLE to find more details.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	RocksDBThrottler.RocksDBSupplier

Constructor Summary

Constructors

Constructor	Description
RocksDBThrottler(int allowedMaxOpenOperationsInParallel)

Method Summary

Modifier and Type	Method	Description
org.rocksdb.RocksDB	open(org.rocksdb.Options options, java.lang.String dbPath, java.util.List<org.rocksdb.ColumnFamilyDescriptor> columnFamilyDescriptors, java.util.List<org.rocksdb.ColumnFamilyHandle> columnFamilyHandles)	Open RocksDB in read-write mode with provided column family descriptors and handlers.
org.rocksdb.RocksDB	openReadOnly(org.rocksdb.Options options, java.lang.String dbPath, java.util.List<org.rocksdb.ColumnFamilyDescriptor> columnFamilyDescriptors, java.util.List<org.rocksdb.ColumnFamilyHandle> columnFamilyHandles)	Open RocksDB in read-only mode with provided column family descriptors and handlers.
protected org.rocksdb.RocksDB	throttledOpen(java.lang.String dbPath, RocksDBThrottler.RocksDBSupplier rocksDBSupplier)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RocksDBThrottler

public RocksDBThrottler(int allowedMaxOpenOperationsInParallel)

Method Detail

throttledOpen

protected org.rocksdb.RocksDB throttledOpen(java.lang.String dbPath,
                                            RocksDBThrottler.RocksDBSupplier rocksDBSupplier)
                                     throws java.lang.InterruptedException,
                                            org.rocksdb.RocksDBException

Throws:

java.lang.InterruptedException

org.rocksdb.RocksDBException

openReadOnly

public org.rocksdb.RocksDB openReadOnly(org.rocksdb.Options options,
                                        java.lang.String dbPath,
                                        java.util.List<org.rocksdb.ColumnFamilyDescriptor> columnFamilyDescriptors,
                                        java.util.List<org.rocksdb.ColumnFamilyHandle> columnFamilyHandles)
                                 throws org.rocksdb.RocksDBException,
                                        java.lang.InterruptedException

Open RocksDB in read-only mode with provided column family descriptors and handlers.

Throws:

org.rocksdb.RocksDBException

java.lang.InterruptedException

open

public org.rocksdb.RocksDB open(org.rocksdb.Options options,
                                java.lang.String dbPath,
                                java.util.List<org.rocksdb.ColumnFamilyDescriptor> columnFamilyDescriptors,
                                java.util.List<org.rocksdb.ColumnFamilyHandle> columnFamilyHandles)
                         throws org.rocksdb.RocksDBException,
                                java.lang.InterruptedException

Open RocksDB in read-write mode with provided column family descriptors and handlers.

Throws:

org.rocksdb.RocksDBException

java.lang.InterruptedException