org.apache.cassandra.service
Class RowRepairResolver

java.lang.Object
  org.apache.cassandra.service.AbstractRowResolver
      org.apache.cassandra.service.RowRepairResolver

All Implemented Interfaces:

IResponseResolver<Row>

public class RowRepairResolver
extends AbstractRowResolver

Field Summary

protected int	maxLiveColumns
java.util.List<IAsyncResult>	repairResults

Fields inherited from class org.apache.cassandra.service.AbstractRowResolver

key, logger, replies, table

Constructor Summary

RowRepairResolver(java.lang.String table, java.nio.ByteBuffer key)

Method Summary

Row	getData() returns the data response without comparing with any digests
int	getMaxLiveColumns()
boolean	isDataPresent()
Row	resolve() This Method resolves the responses that are passed in .
static java.util.List<IAsyncResult>	scheduleRepairs(ColumnFamily resolved, java.lang.String table, DecoratedKey<?> key, java.util.List<ColumnFamily> versions, java.util.List<java.net.InetAddress> endpoints) For each row version, compare with resolved (the superset of all row versions); if it is missing anything, send a mutation to the endpoint it come from.

Methods inherited from class org.apache.cassandra.service.AbstractRowResolver

getMessages, injectPreProcessed, preprocess

Methods inherited from class java.lang.Object

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

Field Detail

maxLiveColumns

protected int maxLiveColumns

repairResults

public java.util.List<IAsyncResult> repairResults

Constructor Detail

RowRepairResolver

public RowRepairResolver(java.lang.String table,
                         java.nio.ByteBuffer key)

Method Detail

resolve

public Row resolve()
            throws DigestMismatchException,
                   java.io.IOException

Description copied from interface: IResponseResolver

This Method resolves the responses that are passed in . for example : if its write response then all we get is true or false return values which implies if the writes were successful but for reads its more complicated you need to look at the responses and then based on differences schedule repairs . Hence you need to derive a response resolver based on your needs from this interface.

Throws:

DigestMismatchException

java.io.IOException

scheduleRepairs

public static java.util.List<IAsyncResult> scheduleRepairs(ColumnFamily resolved,
                                                           java.lang.String table,
                                                           DecoratedKey<?> key,
                                                           java.util.List<ColumnFamily> versions,
                                                           java.util.List<java.net.InetAddress> endpoints)

For each row version, compare with resolved (the superset of all row versions); if it is missing anything, send a mutation to the endpoint it come from.

getData

public Row getData()
            throws java.io.IOException

Description copied from interface: IResponseResolver

returns the data response without comparing with any digests

Throws:

java.io.IOException

isDataPresent

public boolean isDataPresent()

getMaxLiveColumns

public int getMaxLiveColumns()

Specified by:

getMaxLiveColumns in interface IResponseResolver<Row>

Overrides:

getMaxLiveColumns in class AbstractRowResolver