You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hive.apache.org by "Redis Liu (Jira)" <ji...@apache.org> on 2020/02/26 23:46:00 UTC
[jira] [Updated] (HIVE-22936) NPE in SymbolicInputFormat
[ https://issues.apache.org/jira/browse/HIVE-22936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Redis Liu updated HIVE-22936:
-----------------------------
Description:
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
was:
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
> 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
> Priority: Major
> 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
>
--
This message was sent by Atlassian Jira
(v8.3.4#803005)