Redis Liu created HIVE-22936:
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Summary: NPE in SymbolicInputFormat
Key: HIVE-22936
URL: https://issues.apache.org/jira/browse/HIVE-22936
Project: Hive
Issue Type: Bug
Components: File Formats
Affects Versions: 3.1.2
Reporter: Redis Liu
Attachments: npe-symbolic-inputformat.patch
h2. Symptom
I was running Hive over AWS S3 Inventory Report, which uses
SymlinkTextInputFormat, and symlink file content is the FQDN S3 URL of each s3
file, like :
{code:java}
s3://inventory-bucket/bucket1/2020-02-04-11-23-00-AEFEDDCE
s3://inventory-bucket/bucket1/2020-02-05-11-23-00-BCEDCCDD{code}
When I have the following setting:
{code:java}
set hive.rework.mapredwork=true;
{code}
The job fails with *NullPointException*, without stack trace.
h2. Cause
The content of symlink may be arbitrary full qualified FS path, while
SymbolicInputFormat uses the default FS instance to get the status of the data
files, which fails (and returns null) when the schema of data file differs from
Hive's default FS.
Code point:
[https://github.com/apache/hive/blob/cfc12f05f0c034f9aad149960e58d40902e0dcfe/ql/src/java/org/apache/hadoop/hive/ql/io/SymbolicInputFormat.java#L78]
{code:java}
// "fileSystem" may not be able to list status for given file uri.
FileStatus[] matches = fileSystem.globStatus(new
Path(line));{code}
h2. Fix
Please check attached npe-symbolic-inputformat.patch
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