Chaoyu Tang created HIVE-13509:
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Summary: HCatalog getSplits should ignore the partition with
invalid path
Key: HIVE-13509
URL: https://issues.apache.org/jira/browse/HIVE-13509
Project: Hive
Issue Type: Improvement
Components: HCatalog
Reporter: Chaoyu Tang
Assignee: Chaoyu Tang
It is quite common that there is the discrepancy between partition directory
and its HMS metadata, simply because the directory could be added/deleted
externally using hdfs shell command. Technically it should be fixed by MSCK and
alter table .. add/drop command etc, but sometimes it might not be practical
especially in a multi-tenant env. This discrepancy does not cause any problem
to Hive, Hive returns no rows for a partition with an invalid (e.g.
non-existing) path, but it fails the Pig load with HCatLoader, because the
HCatBaseInputFormat getSplits throws an error when getting a split for a
non-existing path. The error message might looks like:
{code}
Caused by: org.apache.hadoop.mapred.InvalidInputException: Input path does not
exist: hdfs://xyz.com:8020/user/hive/warehouse/xyz/date=2016-01-01/country=BR
at
org.apache.hadoop.mapred.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:287)
at
org.apache.hadoop.mapred.FileInputFormat.listStatus(FileInputFormat.java:229)
at
org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:315)
at
org.apache.hive.hcatalog.mapreduce.HCatBaseInputFormat.getSplits(HCatBaseInputFormat.java:162)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:274)
{code}
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