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java.lang.Objectorg.apache.hadoop.hbase.master.TableLockManager
org.apache.hadoop.hbase.master.TableLockManager.NullTableLockManager
@InterfaceAudience.Private public static class TableLockManager.NullTableLockManager
A null implementation
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.hadoop.hbase.master.TableLockManager |
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TableLockManager.NullTableLockManager, TableLockManager.TableLock |
Field Summary |
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Fields inherited from class org.apache.hadoop.hbase.master.TableLockManager |
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DEFAULT_TABLE_LOCK_EXPIRE_TIMEOUT_MS, DEFAULT_TABLE_READ_LOCK_TIMEOUT_MS, DEFAULT_TABLE_WRITE_LOCK_TIMEOUT_MS, TABLE_LOCK_ENABLE, TABLE_LOCK_EXPIRE_TIMEOUT, TABLE_READ_LOCK_TIMEOUT_MS, TABLE_WRITE_LOCK_TIMEOUT_MS |
Constructor Summary | |
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TableLockManager.NullTableLockManager()
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Method Summary | |
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TableLockManager.TableLock |
readLock(TableName tableName,
String purpose)
Returns a TableLock for locking the table for shared access among read-lock holders |
void |
reapAllExpiredLocks()
Force releases all table locks(read and write) that have been held longer than "hbase.table.lock.expire.ms". |
void |
reapWriteLocks()
Force releases table write locks and lock attempts even if this thread does not own the lock. |
void |
tableDeleted(TableName tableName)
Called after a table has been deleted, and after the table lock is released. |
void |
visitAllLocks(InterProcessLock.MetadataHandler handler)
Visits all table locks(read and write), and lock attempts with the given callback MetadataHandler. |
TableLockManager.TableLock |
writeLock(TableName tableName,
String purpose)
Returns a TableLock for locking the table for exclusive access |
Methods inherited from class org.apache.hadoop.hbase.master.TableLockManager |
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createTableLockManager, fromBytes |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TableLockManager.NullTableLockManager()
Method Detail |
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public TableLockManager.TableLock writeLock(TableName tableName, String purpose)
TableLockManager
writeLock
in class TableLockManager
tableName
- Table to lockpurpose
- Human readable reason for locking the table
public TableLockManager.TableLock readLock(TableName tableName, String purpose)
TableLockManager
readLock
in class TableLockManager
tableName
- Table to lockpurpose
- Human readable reason for locking the table
public void reapAllExpiredLocks() throws IOException
TableLockManager
reapAllExpiredLocks
in class TableLockManager
IOException
- If there is an unrecoverable errorpublic void reapWriteLocks() throws IOException
TableLockManager
reapWriteLocks
in class TableLockManager
IOException
- If there is an unrecoverable errorpublic void tableDeleted(TableName tableName) throws IOException
TableLockManager
tableDeleted
in class TableLockManager
tableName
- name of the table
IOException
- If there is an unrecoverable error releasing the lockpublic void visitAllLocks(InterProcessLock.MetadataHandler handler) throws IOException
TableLockManager
visitAllLocks
in class TableLockManager
handler
- the metadata handler to call
IOException
- If there is an unrecoverable error
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