[IMPALA-7792] Disabling ORC scanner can cause query hang

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Impala 3.1.0
• Fix Version/s: Impala 3.1.0
• Component/s: Frontend
• Labels: hang
• Target Version: Impala 3.1.0
• Epic Color: ghx-label-9
• Assignee: Tim Armstrong
• Reporter: Tim Armstrong
• Created: 31/Oct/18 00:36
• Updated: 01/Nov/18 16:07
• Resolved: 01/Nov/18 16:07

Description

$ start-impala-cluster.py --impalad_args=--enable_orc_scanner=false
> select * from functional_orc_def.alltypes;

The error in the impalad logs is:

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)