It should :
OnlineMerger(final HBaseConfiguration conf, final FileSystem fs, final
byte[] tableName) throws IOException
{
super(conf, fs, tableName);
this.tableName = tableName;
table = new HTable(conf, META_TABLE_NAME);
final Filter filter = new PrefixFilter(this.tableName);
final Scan scan = new Scan();
scan.addColumn(CATALOG_FAMILY, REGIONINFO_QUALIFIER);
scan.setFilter(filter);
metaScanner = table.getScanner(scan);
latestRegion = null;
}
or like this :
private HRegionInfo nextRegion() throws IOException
{
try
{
//FIXME
for (;;)
{
final Result results = getMetaRow();
if (results == null)
{
return null;
}
final byte[] regionInfoValue =
results.getValue(CATALOG_FAMILY, REGIONINFO_QUALIFIER);
if (regionInfoValue == null || regionInfoValue.length ==
0)
{
throw new NoSuchElementException("meta region entry
missing " + Bytes.toString(CATALOG_FAMILY)
+ ":" +
Bytes.toString(REGIONINFO_QUALIFIER));
}
final HRegionInfo region =
Writables.getHRegionInfo(regionInfoValue);
//FIXME
if (!Bytes.equals(region.getTableDesc().getName(),
tableName))
{
continue;
}
checkOfflined(region);
return region;
}
}
catch (IOException e)
{
e = RemoteExceptionHandler.checkIOException(e);
LOG.error("meta scanner error", e);
metaScanner.close();
throw e;
}
}
On Sun, Apr 24, 2011 at 3:32 PM, 陈加俊 <[email protected]> wrote:
> @Override
> protected HRegionInfo[] next() throws IOException {
> List<HRegionInfo> regions = new ArrayList<HRegionInfo>();
> if(latestRegion == null) {
> latestRegion = nextRegion();
> }
> if(latestRegion != null) {
> regions.add(latestRegion);
> }
> latestRegion = nextRegion();
> if(latestRegion != null) {
> regions.add(latestRegion);
> }
> return regions.toArray(new HRegionInfo[regions.size()]);
> }
>
> the method nextRegion may get Null ,So there is a bug in HBase0.20.6.
>
>
>
> On Sun, Apr 24, 2011 at 2:56 PM, 陈加俊 <[email protected]> wrote:
>
>> I run jruby as follows :
>>
>> # Name of this script
>> NAME = "merge_table"
>>
>> # Print usage for this script
>> def usage
>> puts 'Usage: %s.rb TABLE_NAME' % NAME
>> exit!
>> end
>>
>> # Get configuration to use.
>> c = HBaseConfiguration.new()
>>
>> # Set hadoop filesystem configuration using the hbase.rootdir.
>> # Otherwise, we'll always use localhost though the hbase.rootdir
>> # might be pointing at hdfs location.
>> c.set("fs.default.name", c.get(HConstants::HBASE_DIR))
>> fs = FileSystem.get(c)
>>
>> # Get a logger and a metautils instance.
>> LOG = LogFactory.getLog(NAME)
>>
>> # Check arguments
>> if ARGV.size < 1 || ARGV.size > 2
>> usage
>> end
>>
>> tableName = java.lang.String.new(ARGV[0])
>> LOG.info("merge regions of table: " + tableName.toString())
>>
>> HMerge.merge(c,fs,Bytes.toBytes(tableName))
>>
>>
>> But it is strange that :
>>
>> ......
>> 11/04/24 14:55:31 DEBUG client.HConnectionManager$TableServers: Cache hit
>> for row <> in tableName .META.: location server 192.168.0.185:60020,
>> location region name .META.,,1
>> 11/04/24 14:55:31 INFO hbase.HMerge: Row:
>> <ContentPageTempletValidate,,1289377363886>
>> 11/04/24 14:55:31 INFO hbase.HMerge: Row: <EnterNodeRNDV,,1301653657945>
>> 11/04/24 14:55:31 INFO hbase.HMerge: only one region - nothing to merge
>> 11/04/24 14:55:31 DEBUG regionserver.HLog: closing hlog writer in hdfs://
>> test.namenode.uc.uuwatch.com:9000/hbase/cjjPutTest1/merge_1303628131187.logs
>> 11/04/24 14:55:31 INFO zookeeper.ZooKeeper: Session: 0x32f5daa5e9700b3
>> closed
>> 11/04/24 14:55:31 INFO zookeeper.ClientCnxn: EventThread shut down
>> 11/04/24 14:55:31 DEBUG zookeeper.ZooKeeperWrapper: Closed connection with
>> ZooKeeper
>>
>> the table cjjPutTest1 has 166 regions ,Why it said only one region ?
>> --
>> Thanks & Best regards
>> jiajun
>>
>>
>
>
> --
> Thanks & Best regards
> jiajun
>
>
--
Thanks & Best regards
jiajun
