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public interface HConnection
Cluster connection.
HConnectionManager
manages instances of this class.
Method Summary | ||
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HRegionInterface |
getHRegionConnection(HServerAddress regionServer)
Establishes a connection to the region server at the specified address. |
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HTableDescriptor |
getHTableDescriptor(byte[] tableName)
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HMasterInterface |
getMaster()
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HRegionLocation |
getRegionLocation(byte[] tableName,
byte[] row,
boolean reload)
Find region location hosting passed row |
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getRegionServerForWithoutRetries(ServerCallable<T> callable)
Pass in a ServerCallable with your particular bit of logic defined and this method will pass it to the defined region server. |
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getRegionServerWithRetries(ServerCallable<T> callable)
Pass in a ServerCallable with your particular bit of logic defined and this method will manage the process of doing retries with timed waits and refinds of missing regions. |
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boolean |
isMasterRunning()
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boolean |
isTableEnabled(byte[] tableName)
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HTableDescriptor[] |
listTables()
List all the userspace tables. |
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HRegionLocation |
locateRegion(byte[] tableName,
byte[] row)
Find the location of the region of tableName that row lives in. |
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void |
processBatchOfRows(ArrayList<BatchUpdate> list,
byte[] tableName)
Process a batch of rows. |
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HRegionLocation |
relocateRegion(byte[] tableName,
byte[] row)
Find the location of the region of tableName that row lives in, ignoring any value that might be in the cache. |
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boolean |
tableExists(byte[] tableName)
Checks if tableName exists. |
Method Detail |
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HMasterInterface getMaster() throws MasterNotRunningException
MasterNotRunningException
boolean isMasterRunning()
boolean tableExists(byte[] tableName) throws MasterNotRunningException
tableName
exists.
tableName
- Table to check.
MasterNotRunningException
boolean isTableEnabled(byte[] tableName) throws IOException
tableName
-
IOException
HTableDescriptor[] listTables() throws IOException
IOException
HTableDescriptor getHTableDescriptor(byte[] tableName) throws IOException
tableName
-
IOException
HRegionLocation locateRegion(byte[] tableName, byte[] row) throws IOException
tableName
- name of the table row is inrow
- row key you're trying to find the region of
IOException
HRegionLocation relocateRegion(byte[] tableName, byte[] row) throws IOException
tableName
- name of the table row is inrow
- row key you're trying to find the region of
IOException
HRegionInterface getHRegionConnection(HServerAddress regionServer) throws IOException
regionServer
- - the server to connect to
IOException
HRegionLocation getRegionLocation(byte[] tableName, byte[] row, boolean reload) throws IOException
tableName
- row
- Row to find.reload
- If true do not use cache, otherwise bypass.
IOException
<T> T getRegionServerWithRetries(ServerCallable<T> callable) throws IOException, RuntimeException
T
- the type of the return valuecallable
-
IOException
RuntimeException
<T> T getRegionServerForWithoutRetries(ServerCallable<T> callable) throws IOException, RuntimeException
T
- the type of the return valuecallable
-
IOException
RuntimeException
void processBatchOfRows(ArrayList<BatchUpdate> list, byte[] tableName) throws IOException
list
- A batch of rows to processtableName
- The name of the table
IOException
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