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.net.InetAddress	coordinator
boolean	isGlobal
boolean	isIncremental
long	repairedAt
java.util.Map<java.util.UUID,java.util.Set<java.lang.String>>	sstableMap

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
Refs<SSTableReader>	getActiveRepairedSSTableRefsForAntiCompaction(java.util.UUID cfId, java.util.UUID parentSessionId) Get the still active sstables we should run anticompaction on note that validation and streaming do not call this method - they have to work on the actual active sstables on the node, we only call this to know which sstables are still there that were there when we started the repair
long	getRepairedAt()
void	markSSTablesRepairing(java.util.UUID cfId, java.util.UUID parentSessionId) Mark sstables repairing - either all sstables or only the unrepaired ones depending on whether this is an incremental or full repair
void	maybeSnapshot(java.util.UUID cfId, java.util.UUID parentSessionId)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

sstableMap

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

isIncremental

public final boolean isIncremental

isGlobal

public final boolean isGlobal

repairedAt

public final long repairedAt

coordinator

public final java.net.InetAddress coordinator

Constructor Detail

ParentRepairSession

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

Method Detail

markSSTablesRepairing

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

Mark sstables repairing - either all sstables or only the unrepaired ones depending on whether this is an incremental or full repair

Parameters:

cfId - the column family

parentSessionId - the parent repair session id, used to make sure we don't start multiple repairs over the same sstables

getActiveRepairedSSTableRefsForAntiCompaction

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

Get the still active sstables we should run anticompaction on note that validation and streaming do not call this method - they have to work on the actual active sstables on the node, we only call this to know which sstables are still there that were there when we started the repair

Parameters:

cfId -

parentSessionId - for checking if there exists a snapshot for this repair

Returns:

maybeSnapshot

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

getRepairedAt

public long getRepairedAt()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object