org.apache.cassandra.service

Class ActiveRepairService.ParentRepairSession

java.lang.Object

org.apache.cassandra.service.ActiveRepairService.ParentRepairSession

Enclosing class:

ActiveRepairService

public static class ActiveRepairService.ParentRepairSession
extends java.lang.Object

We keep a ParentRepairSession around for the duration of the entire repair, for example, on a 256 token vnode rf=3 cluster we would have 768 RepairSession but only one ParentRepairSession. We use the PRS to avoid anticompacting the sstables 768 times, instead we take all repaired ranges at the end of the repair and anticompact once. We do an optimistic marking of sstables - when we start an incremental repair we mark all unrepaired sstables as repairing (@see markSSTablesRepairing), then while the repair is ongoing compactions might remove those sstables, and when it is time for anticompaction we will only anticompact the sstables that are still on disk. Note that validation and streaming do not care about which sstables we have marked as repairing - they operate on all unrepaired sstables (if it is incremental), otherwise we would not get a correct repair.

Field Summary

Fields

Modifier and Type	Field and Description
java.util.Map<java.util.UUID,ColumnFamilyStore>	columnFamilyStores
java.net.InetAddress	coordinator
boolean	failed Used to mark a repair as failed - if the coordinator thinks that the repair is still ongoing and sends a request, we need to fail the coordinator as well.
java.util.Collection<Range<Token>>	ranges
long	repairedAt used as fail time if failed is true
java.util.Map<java.util.UUID,java.util.Set<java.lang.String>>	sstableMap

Constructor Summary

Constructors

Constructor and Description
ActiveRepairService.ParentRepairSession(java.net.InetAddress coordinator, java.util.List<ColumnFamilyStore> columnFamilyStores, java.util.Collection<Range<Token>> ranges, long repairedAt)
ActiveRepairService.ParentRepairSession(java.net.InetAddress coordinator, java.util.List<ColumnFamilyStore> columnFamilyStores, java.util.Collection<Range<Token>> ranges, long repairedAt, boolean failed)

Method Summary

Methods

Modifier and Type	Method and Description
ActiveRepairService.ParentRepairSession	asFailed()
Refs<SSTableReader>	getActiveRepairedSSTableRefsForAntiCompaction(java.util.UUID cfId) Gets the repairing sstables for anticompaction.
void	markSSTablesRepairing(java.util.UUID cfId, java.util.UUID parentSessionId) Marks all the unrepaired sstables as repairing unless we have already done so.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

columnFamilyStores

public final java.util.Map<java.util.UUID,ColumnFamilyStore> columnFamilyStores

ranges

public final java.util.Collection<Range<Token>> ranges

sstableMap

public final java.util.Map<java.util.UUID,java.util.Set<java.lang.String>> sstableMap

repairedAt

public final long repairedAt

used as fail time if failed is true

coordinator

public final java.net.InetAddress coordinator

failed

public final boolean failed

Used to mark a repair as failed - if the coordinator thinks that the repair is still ongoing and sends a request, we need to fail the coordinator as well.

Constructor Detail

ActiveRepairService.ParentRepairSession

public ActiveRepairService.ParentRepairSession(java.net.InetAddress coordinator,
                                       java.util.List<ColumnFamilyStore> columnFamilyStores,
                                       java.util.Collection<Range<Token>> ranges,
                                       long repairedAt,
                                       boolean failed)

ActiveRepairService.ParentRepairSession

public ActiveRepairService.ParentRepairSession(java.net.InetAddress coordinator,
                                       java.util.List<ColumnFamilyStore> columnFamilyStores,
                                       java.util.Collection<Range<Token>> ranges,
                                       long repairedAt)

Method Detail

getActiveRepairedSSTableRefsForAntiCompaction

public Refs<SSTableReader> getActiveRepairedSSTableRefsForAntiCompaction(java.util.UUID cfId)

Gets the repairing sstables for anticompaction. Note that validation and streaming uses the real unrepaired sstables.

Parameters:

cfId -

Returns:

markSSTablesRepairing

public void markSSTablesRepairing(java.util.UUID cfId,
                         java.util.UUID parentSessionId)

Marks all the unrepaired sstables as repairing unless we have already done so. Any of these sstables that are still on disk are then anticompacted once the streaming and validation phases are done.

Parameters:

cfId -

parentSessionId - used to check that we don't start multiple inc repair sessions over the same sstables

asFailed

public ActiveRepairService.ParentRepairSession asFailed()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object