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From "Kirk True (JIRA)" <j...@apache.org>
Subject [jira] Created: (HIVE-1996) "LOAD DATA INPATH" fails when the table already contains a file of the same name
Date Wed, 16 Feb 2011 20:21:25 GMT
"LOAD DATA INPATH" fails when the table already contains a file of the same name
--------------------------------------------------------------------------------

                 Key: HIVE-1996
                 URL: https://issues.apache.org/jira/browse/HIVE-1996
             Project: Hive
          Issue Type: Bug
    Affects Versions: 0.7.0
            Reporter: Kirk True
            Assignee: Kirk True


Steps:

1. From the command line copy the kv2.txt data file into the current user's HDFS directory:

    $ hadoop fs -copyFromLocal /path/to/hive/sources/data/files/kv2.txt kv2.txt

2. In Hive, create the table:

    create table tst_src1 (key_ int, value_ string);

3. Load the data into the table from HDFS:

    load data inpath './kv2.txt' into table tst_src1;

4. Repeat step 1
5. Repeat step 3

Expected:

To have kv2.txt renamed in HDFS and then copied to the destination as per HIVE-307.

Actual:

File is renamed, but Hive.copyFiles doesn't "see" the change in "srcs" as it continues to
use the same array elements (with the un-renamed, old file names). It crashes with this error:

java.lang.NullPointerException
    at org.apache.hadoop.hive.ql.metadata.Hive.copyFiles(Hive.java:1725)
    at org.apache.hadoop.hive.ql.metadata.Table.copyFiles(Table.java:541)
    at org.apache.hadoop.hive.ql.metadata.Hive.loadTable(Hive.java:1173)
    at org.apache.hadoop.hive.ql.exec.MoveTask.execute(MoveTask.java:197)
    at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:130)
    at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57)
    at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1060)
    at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:897)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:745)
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:164)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:156)

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