Class TableLoadBalancer
- java.lang.Object
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- org.apache.accumulo.server.master.balancer.TabletBalancer
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- org.apache.accumulo.server.master.balancer.TableLoadBalancer
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- All Implemented Interfaces:
TabletBalancer
- Direct Known Subclasses:
HostRegexTableLoadBalancer
@Deprecated(since="2.1.0") public class TableLoadBalancer extends TabletBalancer
Deprecated.since 2.1.0. UseTableLoadBalancer
instead.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.accumulo.server.master.balancer.TabletBalancer
TabletBalancer.BalancerProblem, TabletBalancer.NoTservers, TabletBalancer.OutstandingMigrations
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Nested classes/interfaces inherited from interface org.apache.accumulo.core.spi.balancer.TabletBalancer
TabletBalancer.AssignmentParameters, TabletBalancer.BalanceParameters
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Field Summary
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Fields inherited from class org.apache.accumulo.server.master.balancer.TabletBalancer
context, TIME_BETWEEN_BALANCER_WARNINGS
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Constructor Summary
Constructors Constructor Description TableLoadBalancer()
Deprecated.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description long
balance(SortedMap<TServerInstance,TabletServerStatus> current, Set<KeyExtent> migrations, List<TabletMigration> migrationsOut)
Deprecated.Ask the balancer if any migrations are necessary.void
getAssignments(SortedMap<TServerInstance,TabletServerStatus> current, Map<KeyExtent,TServerInstance> unassigned, Map<KeyExtent,TServerInstance> assignments)
Deprecated.Assign tablets to tablet servers.protected TabletBalancer
getBalancerForTable(TableId tableId)
Deprecated.protected String
getLoadBalancerClassNameForTable(TableId table)
Deprecated.protected TableOperations
getTableOperations()
Deprecated.-
Methods inherited from class org.apache.accumulo.server.master.balancer.TabletBalancer
balance, checkMigrationSanity, constraintNotMet, getAssignments, getOnlineTabletsForTable, init, init, init, resetBalancerErrors
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Method Detail
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getLoadBalancerClassNameForTable
protected String getLoadBalancerClassNameForTable(TableId table)
Deprecated.
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getBalancerForTable
protected TabletBalancer getBalancerForTable(TableId tableId)
Deprecated.
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getAssignments
public void getAssignments(SortedMap<TServerInstance,TabletServerStatus> current, Map<KeyExtent,TServerInstance> unassigned, Map<KeyExtent,TServerInstance> assignments)
Deprecated.Description copied from class:TabletBalancer
Assign tablets to tablet servers. This method is called whenever the manager finds tablets that are unassigned.- Specified by:
getAssignments
in classTabletBalancer
- Parameters:
current
- The current table-summary state of all the online tablet servers. Read-only. The TabletServerStatus for each server may be null if the tablet server has not yet responded to a recent request for status.unassigned
- A map from unassigned tablet to the last known tablet server. Read-only.assignments
- A map from tablet to assigned server. Write-only.
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getTableOperations
protected TableOperations getTableOperations()
Deprecated.
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balance
public long balance(SortedMap<TServerInstance,TabletServerStatus> current, Set<KeyExtent> migrations, List<TabletMigration> migrationsOut)
Deprecated.Description copied from class:TabletBalancer
Ask the balancer if any migrations are necessary. If the balancer is going to self-abort due to some environmental constraint (e.g. it requires some minimum number of tservers, or a maximum number of outstanding migrations), it should issue a log message to alert operators. The message should be at WARN normally and at ERROR if the balancer knows that the problem can not self correct. It should not issue these messages more than once a minute.- Specified by:
balance
in classTabletBalancer
- Parameters:
current
- The current table-summary state of all the online tablet servers. Read-only.migrations
- the current set of migrations. Read-only.migrationsOut
- new migrations to perform; should not contain tablets in the current set of migrations. Write-only.- Returns:
- the time, in milliseconds, to wait before re-balancing. This method will not be called when there are unassigned tablets.
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