[DERBY-6492] ASSERT FAILED: LanguageConnectionContext is null

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 10.10.1.1
• Component/s: Services
• Urgency: Normal
• Assignee: Unassigned
• Reporter: Florian Rapp
• Created: 03/Mar/14 09:10
• Updated: 05/Mar/14 19:38

Description

The LanguageConnectionContext is sometimes null when the system is under heavy load. This seems to be a problem of multithreaded access.

Our production test got NPE and ArrayIndexOutOfBounds exceptions, we then enabled more logging. We suspect the problem is BaseActivation.initFromContext. The context seems to not be properly initialized, probably due to multithreaded access. The NPE we got could stem from "context.getContextManager()".

An exception ('ASSERT FAILED lcc is null in activation type class org.apache.derby.exe.aca90748aax0144x7731x56b2x0000131d61d046') occurred in Derby and will be wrapped:
org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED lcc is null in activation type class org.apache.derby.exe.aca90748aax0144x7731x56b2x0000131d61d046
at org.apache.derby.shared.common.sanity.SanityManager.THROWASSERT(SanityManager.java:162)
at org.apache.derby.shared.common.sanity.SanityManager.THROWASSERT(SanityManager.java:147)
at org.apache.derby.impl.sql.execute.BaseActivation.initFromContext(BaseActivation.java:236)
at org.apache.derby.impl.services.reflect.LoadedGeneratedClass.newInstance(LoadedGeneratedClass.java:69)
at org.apache.derby.impl.sql.GenericActivationHolder.<init>(GenericActivationHolder.java:129)
at org.apache.derby.impl.sql.GenericPreparedStatement.getActivation(GenericPreparedStatement.java:270)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement.<init>(EmbedPreparedStatement.java:140)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement20.<init>(EmbedPreparedStatement20.java:83)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement30.<init>(EmbedPreparedStatement30.java:63)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement40.<init>(EmbedPreparedStatement40.java:40)
at org.apache.derby.jdbc.Driver40.newEmbedPreparedStatement(Driver40.java:102)
at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(EmbedConnection.java:1725)
at org.apache.derby.impl.jdbc.EmbedConnection.prepareStatement(EmbedConnection.java:1553)

Issue Links

• relates to: DERBY-6496 Optional tool registration may fail because the CompilerContext is not always available at execution time.