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From "Weichen Ye (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-12717) Pre-split in HBaseAdmin.create() can not find the split point
Date Thu, 18 Dec 2014 14:14:13 GMT
Weichen Ye created HBASE-12717:

             Summary: Pre-split in HBaseAdmin.create() can not find the split point
                 Key: HBASE-12717
                 URL: https://issues.apache.org/jira/browse/HBASE-12717
             Project: HBase
          Issue Type: Bug
          Components: Admin
    Affects Versions: 0.98.6
            Reporter: Weichen Ye
            Priority: Critical

When we set the start key and the end key in the function:
createTable(HTableDescriptor desc, byte[] startKey, byte[] endKey, int numRegions)

the pre-split algorithm could not find a split point between the keys like "aaa" and "aab",
"1111" and "1112". 

This pre-split algorithm should be able to get split point with an additional bytes. for example:
"aaa" and "aab", split point= "aaaP"
"1111" and "1112", split point ="1111P" 

Example Code for this bug:
admin.createTable(htd, Bytes.toBytes("aaa"), Bytes.toBytes("aab"), 4);

we will get the following ERROR:
Exception in thread "main" java.lang.IllegalArgumentException: Unable to split key range into
enough regions
	at org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:473)
	at test.JavaTest.main(JavaTest.java:28)


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