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https://issues.apache.org/jira/browse/HBASE-3271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13439297#comment-13439297
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liang xie commented on HBASE-3271:
----------------------------------
@Stack @Ted or some other guys, could you kindly help to review? thanks in
advance:)
> Allow .META. table to be exported
> ---------------------------------
>
> Key: HBASE-3271
> URL: https://issues.apache.org/jira/browse/HBASE-3271
> Project: HBase
> Issue Type: Improvement
> Components: util
> Affects Versions: 0.20.6
> Reporter: Ted Yu
> Attachments: HBASE-3271.patch
>
>
> I tried to export .META. table in 0.20.6 and got:
> [hadoop@us01-ciqps1-name01 hbase]$ bin/hbase
> org.apache.hadoop.hbase.mapreduce.Export .META. h-meta 1 0 0
> 10/11/23 20:59:05 INFO jvm.JvmMetrics: Initializing JVM Metrics with
> processName=JobTracker, sessionId=
> 2010-11-23 20:59:05.255::INFO: Logging to STDERR via
> org.mortbay.log.StdErrLog
> 2010-11-23 20:59:05.255::INFO: verisons=1, starttime=0,
> endtime=9223372036854775807
> 10/11/23 20:59:05 INFO zookeeper.ZooKeeper: Client
> environment:zookeeper.version=3.2.2-888565, built on 12/08/2009 21:51 GMT
> 10/11/23 20:59:05 INFO zookeeper.ZooKeeper: Client
> environment:host.name=us01-ciqps1-name01.carrieriq.com
> 10/11/23 20:59:05 INFO zookeeper.ZooKeeper: Client
> environment:java.version=1.6.0_21
> 10/11/23 20:59:05 INFO zookeeper.ZooKeeper: Client
> environment:java.vendor=Sun Microsystems Inc.
> ...
> 10/11/23 20:59:05 INFO zookeeper.ClientCnxn: Server connection successful
> 10/11/23 20:59:05 DEBUG zookeeper.ZooKeeperWrapper: Read ZNode
> /hbase/root-region-server got 10.202.50.112:60020
> 10/11/23 20:59:05 DEBUG client.HConnectionManager$TableServers: Found ROOT at
> 10.202.50.112:60020
> 10/11/23 20:59:05 DEBUG client.HConnectionManager$TableServers: Cached
> location for .META.,,1 is us01-ciqps1-grid02.carrieriq.com:60020
> Exception in thread "main" java.io.IOException: Expecting at least one region.
> at
> org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:281)
> at
> org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:885)
> at
> org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:779)
> at org.apache.hadoop.mapreduce.Job.submit(Job.java:432)
> at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:447)
> at org.apache.hadoop.hbase.mapreduce.Export.main(Export.java:146)
> Related code is:
> if (keys == null || keys.getFirst() == null ||
> keys.getFirst().length == 0) {
> throw new IOException("Expecting at least one region.");
> }
> My intention was to save the dangling rows in .META. (for future
> investigation) which prevented a table from being created.
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