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java.lang.Objectorg.apache.hadoop.hbase.client.MetaScanner
public class MetaScanner
Scanner class that contains the .META.
table scanning logic
and uses a Retryable scanner. Provided visitors will be called
for each row.
Although public visibility, this is not a public-facing API and may evolve in
minor releases.
Nested Class Summary | |
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static interface |
MetaScanner.MetaScannerVisitor
Visitor class called to process each row of the .META. |
Constructor Summary | |
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MetaScanner()
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Method Summary | |
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static List<HRegionInfo> |
listAllRegions(org.apache.hadoop.conf.Configuration conf)
Lists all of the regions currently in META. |
static List<HRegionInfo> |
listAllRegions(org.apache.hadoop.conf.Configuration conf,
boolean offlined)
Lists all of the regions currently in META. |
static void |
metaScan(org.apache.hadoop.conf.Configuration configuration,
MetaScanner.MetaScannerVisitor visitor)
Scans the meta table and calls a visitor on each RowResult and uses a empty start row value as table name. |
static void |
metaScan(org.apache.hadoop.conf.Configuration configuration,
MetaScanner.MetaScannerVisitor visitor,
byte[] userTableName)
Scans the meta table and calls a visitor on each RowResult. |
static void |
metaScan(org.apache.hadoop.conf.Configuration configuration,
MetaScanner.MetaScannerVisitor visitor,
byte[] userTableName,
byte[] row,
int rowLimit)
Scans the meta table and calls a visitor on each RowResult. |
static void |
metaScan(org.apache.hadoop.conf.Configuration configuration,
MetaScanner.MetaScannerVisitor visitor,
byte[] tableName,
byte[] row,
int rowLimit,
byte[] metaTableName)
Scans the meta table and calls a visitor on each RowResult. |
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 MetaScanner()
Method Detail |
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public static void metaScan(org.apache.hadoop.conf.Configuration configuration, MetaScanner.MetaScannerVisitor visitor) throws IOException
configuration
- confvisitor
- A custom visitor
IOException
- epublic static void metaScan(org.apache.hadoop.conf.Configuration configuration, MetaScanner.MetaScannerVisitor visitor, byte[] userTableName) throws IOException
configuration
- configvisitor
- visitor objectuserTableName
- User table name in meta table to start scan at. Pass
null if not interested in a particular table.
IOException
- epublic static void metaScan(org.apache.hadoop.conf.Configuration configuration, MetaScanner.MetaScannerVisitor visitor, byte[] userTableName, byte[] row, int rowLimit) throws IOException
rowLimit
of rows.
configuration
- HBase configuration.visitor
- Visitor object.userTableName
- User table name in meta table to start scan at. Pass
null if not interested in a particular table.row
- Name of the row at the user table. The scan will start from
the region row where the row resides.rowLimit
- Max of processed rows. If it is less than 0, it
will be set to default value Integer.MAX_VALUE
.
IOException
- epublic static void metaScan(org.apache.hadoop.conf.Configuration configuration, MetaScanner.MetaScannerVisitor visitor, byte[] tableName, byte[] row, int rowLimit, byte[] metaTableName) throws IOException
rowLimit
of rows.
configuration
- HBase configuration.visitor
- Visitor object.tableName
- User table name in meta table to start scan at. Pass
null if not interested in a particular table.row
- Name of the row at the user table. The scan will start from
the region row where the row resides.rowLimit
- Max of processed rows. If it is less than 0, it
will be set to default value Integer.MAX_VALUE
.metaTableName
- Meta table to scan, root or meta.
IOException
- epublic static List<HRegionInfo> listAllRegions(org.apache.hadoop.conf.Configuration conf) throws IOException
conf
-
IOException
public static List<HRegionInfo> listAllRegions(org.apache.hadoop.conf.Configuration conf, boolean offlined) throws IOException
conf
- offlined
- True if we are to include offlined regions, false and we'll
leave out offlined regions from returned list.
IOException
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