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[Bug]: Null pointer exception while executing a Webservice pipeline #3498

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kevin-dmello opened this issue Dec 15, 2023 · 5 comments
Open

[Bug]: Null pointer exception while executing a Webservice pipeline #3498

kevin-dmello opened this issue Dec 15, 2023 · 5 comments
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awaiting triage bug Hop Server P3 Nice to have

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@kevin-dmello
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Apache Hop version?

2.7.0 (2023-12-01 10.59.05)

Java version?

11

Operating system

Linux

What happened?

Was testing out the web service capability of the Hop server and ran into a null pointer exception while executing the webservice pipeline. Had an incorrect setting on the Pipeline run configuration for the web service - had it remote instead of local, changing this fixed the issue, but logging this since we should ideally not have a NPE thrown. Here's the exception:

javax.servlet.ServletException: Error producing web service output
at org.apache.hop.www.WebServiceServlet.doGet(WebServiceServlet.java:231)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at org.apache.hop.www.BaseHttpServlet.service(BaseHttpServlet.java:103)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:550)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:59)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:567)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:516)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:135)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:882)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1036)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: org.apache.hop.core.exception.HopException:
Error preparing remote pipeline
at java.lang.Thread.run (Thread.java:829)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run (QueuedThreadPool.java:1036)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob (QueuedThreadPool.java:882)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce (EatWhatYouKill.java:135)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce (EatWhatYouKill.java:171)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce (EatWhatYouKill.java:313)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask (EatWhatYouKill.java:336)
at org.eclipse.jetty.io.ChannelEndPoint$1.run (ChannelEndPoint.java:104)
at org.eclipse.jetty.io.FillInterest.fillable (FillInterest.java:105)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded (AbstractConnection.java:311)
at org.eclipse.jetty.server.HttpConnection.onFillable (HttpConnection.java:277)
at org.eclipse.jetty.server.HttpChannel.handle (HttpChannel.java:380)
at org.eclipse.jetty.server.HttpChannel.dispatch (HttpChannel.java:633)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1 (HttpChannel.java:388)
at org.eclipse.jetty.server.Server.handle (Server.java:516)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle (HandlerWrapper.java:127)
at org.eclipse.jetty.security.SecurityHandler.handle (SecurityHandler.java:567)
at org.eclipse.jetty.server.handler.HandlerList.handle (HandlerList.java:59)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle (ContextHandlerCollection.java:234)
at org.eclipse.jetty.server.handler.ScopedHandler.handle (ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandler.doScope (ContextHandler.java:1350)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope (ScopedHandler.java:186)
at org.eclipse.jetty.server.session.SessionHandler.doScope (SessionHandler.java:1594)
at org.eclipse.jetty.servlet.ServletHandler.doScope (ServletHandler.java:501)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope (ScopedHandler.java:188)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle (ContextHandler.java:1435)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle (ScopedHandler.java:233)
at org.eclipse.jetty.server.session.SessionHandler.doHandle (SessionHandler.java:1624)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle (ScopedHandler.java:233)
at org.eclipse.jetty.servlet.ServletHandler.doHandle (ServletHandler.java:550)
at org.eclipse.jetty.servlet.ServletHolder.handle (ServletHolder.java:799)
at javax.servlet.http.HttpServlet.service (HttpServlet.java:790)
at org.apache.hop.www.BaseHttpServlet.service (BaseHttpServlet.java:103)
at javax.servlet.http.HttpServlet.service (HttpServlet.java:687)
at org.apache.hop.www.WebServiceServlet.doGet (WebServiceServlet.java:195)
at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution (RemotePipelineEngine.java:229)
at org.apache.hop.core.logging.LogChannel.logBasic (LogChannel.java:157)
at org.apache.hop.core.logging.LogChannel.println (LogChannel.java:105)
at org.apache.hop.core.logging.LogLevel.isVisible (LogLevel.java:103)
at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution(RemotePipelineEngine.java:258)
at org.apache.hop.www.WebServiceServlet.doGet(WebServiceServlet.java:195)
... 34 more
Caused by: java.lang.NullPointerException
at org.apache.hop.core.logging.LogLevel.isVisible(LogLevel.java:103)
at org.apache.hop.core.logging.LogChannel.println(LogChannel.java:105)
at org.apache.hop.core.logging.LogChannel.logBasic(LogChannel.java:157)
at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution(RemotePipelineEngine.java:229)
... 35 more

Issue Priority

Priority: 3

Issue Component

Component: Hop Server
@github-actions github-actions bot added P3 Nice to have Hop Server labels Dec 15, 2023
@Keziake
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Keziake commented May 27, 2024 •
edited
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Hi,
I'm having the same issue.

Here is the message and stack:

HTTP ERROR 500 javax.servlet.ServletException: Error producing web service output

URI: | /hop/webService/ -- | -- 500 javax.servlet.ServletException: Error producing web service output org.apache.hop.www.WebServiceServlet-2ba9ed19 javax.servlet.ServletException: Error producing web service output org.apache.hop.core.exception.HopException: Error preparing remote pipeline Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null java.lang.NullPointerException: Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null

Caused by:

javax.servlet.ServletException: Error producing web service output
	at org.apache.hop.www.WebServiceServlet.doGet(WebServiceServlet.java:231)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
	at org.apache.hop.www.BaseHttpServlet.service(BaseHttpServlet.java:103)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:550)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234)
	at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:59)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:567)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:516)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:882)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1036)
	at java.base/java.lang.Thread.run(Thread.java:1589)
Caused by: org.apache.hop.core.exception.HopException: 
Error preparing remote pipeline
Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null

at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution(RemotePipelineEngine.java:259)
at org.apache.hop.www.WebServiceServlet.doGet(WebServiceServlet.java:195)
... 30 more



Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null

at org.apache.hop.core.logging.LogLevel.isVisible(LogLevel.java:103)

at org.apache.hop.core.logging.LogChannel.println(LogChannel.java:105)

at org.apache.hop.core.logging.LogChannel.logBasic(LogChannel.java:157)

at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution(RemotePipelineEngine.java:230)

... 31 more

@pepcim
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pepcim commented Nov 18, 2024

I have the same issue:
java.lang.NullPointerException
at org.apache.hop.www.GetStatusServlet.doGet(GetStatusServlet.java:421)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:791)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:550)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:59)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:567)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:516)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
at java.base/java.lang.Thread.run(Thread.java:829)

@jortilles
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Contributor

I have the same issue.

HTTP ERROR 500 javax.servlet.ServletException: Error producing web service output

URI: | /hop/webService/ -- | -- 500 javax.servlet.ServletException: Error producing web service output org.apache.hop.www.WebServiceServlet-154f8280 javax.servlet.ServletException: Error producing web service output org.apache.hop.core.exception.HopException: Error preparing remote pipeline Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null java.lang.NullPointerException: Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null

Caused by:

javax.servlet.ServletException: Error producing web service output
	at org.apache.hop.www.WebServiceServlet.doGet(WebServiceServlet.java:230)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
	at org.apache.hop.www.BaseHttpServlet.service(BaseHttpServlet.java:102)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:550)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234)
	at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:59)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:567)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:516)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:135)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:882)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1036)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: org.apache.hop.core.exception.HopException: 
Error preparing remote pipeline
Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null

at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution(RemotePipelineEngine.java:264)
at org.apache.hop.www.WebServiceServlet.doGet(WebServiceServlet.java:194)
... 34 more



Caused by: java.lang.NullPointerException: Cannot invoke "org.apache.hop.core.logging.LogLevel.getLevel()" because "filterLogLevel" is null

at org.apache.hop.core.logging.LogLevel.isVisible(LogLevel.java:103)

at org.apache.hop.core.logging.LogChannel.println(LogChannel.java:108)

at org.apache.hop.core.logging.LogChannel.logBasic(LogChannel.java:160)

at org.apache.hop.pipeline.engines.remote.RemotePipelineEngine.prepareExecution(RemotePipelineEngine.java:235)

... 35 more

@hansva
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hansva commented Nov 20, 2024

The answer is already in the ticket. A misconfigured remote pipeline configuration.
The Run configuration of the remote Pipeline Run configuration should be a local run configuration.

@pepcim
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pepcim commented Nov 20, 2024

Thank you Hans!

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5 participants
@Keziake @hansva @jortilles @pepcim @kevin-dmello