[jira] [Created] (TAJO-1872) Increase the minimum split size and add a classpath to hadoop tools

["Jihoon Son (JIRA)" <ji...@apache.org>]

Jihoon Son created TAJO-1872:
--------------------------------

             Summary: Increase the minimum split size and add a classpath to hadoop tools
                 Key: TAJO-1872
                 URL: https://issues.apache.org/jira/browse/TAJO-1872
             Project: Tajo
          Issue Type: Task
          Components: conf and scripts
            Reporter: Jihoon Son
             Fix For: 0.11.0


The current minimum split size is 1 byte. This can cause a wrong behaviour when the underlying file system gives the wrong block size.
For example, s3a file system sometimes returns 0, so tajo creates a split for each byte as follows.
{noformat}
default> \d customer

table name: default.customer
table uri: s3a://id:key@tajo-data-sa-east-1/tpch-1g/customer/customer.tbl
store type: TEXT
number of rows: unknown
volume: 24.3 MB

...
2015-09-21 12:42:37,806 INFO org.apache.tajo.storage.FileTablespace: Total # of splits: 24346144
...
{noformat}



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