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Posted to issues-all@impala.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2018/11/01 16:05:01 UTC
[jira] [Commented] (IMPALA-7792) Disabling ORC scanner can cause
query hang
[ https://issues.apache.org/jira/browse/IMPALA-7792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16671806#comment-16671806 ]
ASF subversion and git services commented on IMPALA-7792:
---------------------------------------------------------
Commit 0e1f304e6bfd22795084252be9efb2937679f1eb in impala's branch refs/heads/master from [~tarmstrong@cloudera.com]
[ https://git-wip-us.apache.org/repos/asf?p=impala.git;h=0e1f304 ]
IMPALA-7792: fix disabling of ORC scans
The previous approach could lead to hangs or cryptic error messages
because it removed the ORC data type from a lookup table.
Instead check explicitly in the planner for ORC scans and throw a
more helpful error message.
Testing:
Added custom cluster test to exercise code and check error message.
Change-Id: I209e79b18745c48d0182800a916d6566083f4609
Reviewed-on: http://gerrit.cloudera.org:8080/11835
Reviewed-by: Impala Public Jenkins <im...@cloudera.com>
Tested-by: Impala Public Jenkins <im...@cloudera.com>
> Disabling ORC scanner can cause query hang
> ------------------------------------------
>
> Key: IMPALA-7792
> URL: https://issues.apache.org/jira/browse/IMPALA-7792
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 3.1.0
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Blocker
> Labels: hang
>
> {noformat}
> $ start-impala-cluster.py --impalad_args=--enable_orc_scanner=false
> > select * from functional_orc_def.alltypes;
> {noformat}
> The error in the impalad logs is:
> {noformat}
> E1030 17:36:12.035167 5934 ImpaladCatalog.java:217] Error adding catalog object: null
> Java exception follows:
> java.lang.NullPointerException
> at org.apache.impala.catalog.Table.fromThrift(Table.java:286)
> at org.apache.impala.catalog.ImpaladCatalog.addTable(ImpaladCatalog.java:397)
> at org.apache.impala.catalog.ImpaladCatalog.addCatalogObject(ImpaladCatalog.java:284)
> at org.apache.impala.catalog.ImpaladCatalog.updateCatalog(ImpaladCatalog.java:215)
> at org.apache.impala.service.FeCatalogManager$CatalogdImpl.updateCatalogCache(FeCatalogManager.java:105)
> at org.apache.impala.service.Frontend.updateCatalogCache(Frontend.java:264)
> at org.apache.impala.service.JniFrontend.updateCatalogCache(JniFrontend.java:187)
> {noformat}
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