[jira] [Updated] (SQOOP-3243) Importing BLOB data causes "Stream closed" error on encrypted HDFS

["Boglarka Egyed (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SQOOP-3243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Boglarka Egyed updated SQOOP-3243:
----------------------------------
    Summary: Importing BLOB data causes "Stream closed" error on encrypted HDFS  (was: Importing LOB data causes "Stream closed" error on encrypted HDFS)

> Importing BLOB data causes "Stream closed" error on encrypted HDFS
> ------------------------------------------------------------------
>
>                 Key: SQOOP-3243
>                 URL: https://issues.apache.org/jira/browse/SQOOP-3243
>             Project: Sqoop
>          Issue Type: Bug
>    Affects Versions: 1.4.6
>            Reporter: Boglarka Egyed
>
> Importing BLOB data into encrypted zone causes "Stream closed" error with
> * BLOB data size bigger than 16MB
> * Java 8
> {noformat}
> 17/10/12 07:16:04 INFO mapreduce.Job: Running job: job_1507777811520_5091
> 17/10/12 07:16:13 INFO mapreduce.Job: Job job_1507777811520_5091 running in uber mode : false
> 17/10/12 07:16:13 INFO mapreduce.Job: map 0% reduce 0%
> 17/10/12 07:22:37 INFO mapreduce.Job: Task Id : attempt_1507777811520_5091_m_000000_0, Status : FAILED
> Error: java.io.IOException: Stream closed
> at org.apache.hadoop.crypto.CryptoOutputStream.checkStream(CryptoOutputStream.java:268)
> at org.apache.hadoop.crypto.CryptoOutputStream.flush(CryptoOutputStream.java:255)
> at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
> at java.io.DataOutputStream.flush(DataOutputStream.java:123)
> at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:141)
> at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
> at org.apache.commons.io.output.ProxyOutputStream.close(ProxyOutputStream.java:117)
> at org.apache.sqoop.io.LobFile$V0Writer.close(LobFile.java:1669)
> at org.apache.sqoop.lib.LargeObjectLoader.close(LargeObjectLoader.java:96)
> at org.apache.sqoop.mapreduce.AvroImportMapper.cleanup(AvroImportMapper.java:79)
> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:148)
> at org.apache.sqoop.mapreduce.AutoProgressMapper.run(AutoProgressMapper.java:64)
> at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
> at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709)
> at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
> {noformat}
> The root cause of this issue seems to be in LobFile.close method, which is being invoked from the Map cleanup. In line 1669, from the stacktrace, it's trying to close countingOut OS. However, at line 1664, out OS is already being closed. However, out OS is just a wrapper of countingOut OS, so at the end, both are pointing to same instance of CryptoOutputStream. When the call reaches line 1669, CryptoOutputStream instance is already closed by line 1664. The problem happens because java.io.BufferedOutputStream will try to call flush on the underlying OS it's wrapping (in this case, CryptoOutputStream), reaching line 255 of CryptoOutputStream.



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