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Posted to dev@ctakes.apache.org by Marshall Schor <ms...@schor.com> on 2017/02/12 16:27:11 UTC
insight into this issue involving NullPointerException in cTakes
Hi,
We have a thread over on the UIMA dev list, under the subject "CAS Pool", by
shahid ashraf.
He's getting a "null" returned in cTakes code in the lvg annotator (which leads
to a NullPointerException), where it calls lvgCmd.MutateToString(word).
This apparently works for him when running single threaded, but fails when
running multiple threads in parallel.
When I looked at this, I saw the MutateToString code seems to call 3rd party
code from the NIH library.
Is it possible cTakes or this library doesn't like being called on multiple threads?
-Marshall
Re: insight into this issue involving NullPointerException in cTakes
Posted by shahid ashraf <sh...@trialx.com>.
Thanks ....
It seems LVG issue from NLM
On Wed, Feb 15, 2017 at 12:14 AM, Marshall Schor <ms...@schor.com> wrote:
> I received a message from someone at cTakes confirming that this is,
> indeed, a
> problem with the 3rd party library being used by cTakes not being
> thread-safe.
>
> So it is not a UIMA issue.
>
> -Marshall
>
>
> On 2/12/2017 11:28 AM, Marshall Schor wrote:
> > I meant to "cc" this to the uima dev list... it's for the cTakes dev
> list, of
> > course.
> >
> > -Marshall
> >
> >
> > On 2/12/2017 11:27 AM, Marshall Schor wrote:
> >> Hi,
> >>
> >> We have a thread over on the UIMA dev list, under the subject "CAS
> Pool", by
> >> shahid ashraf.
> >>
> >> He's getting a "null" returned in cTakes code in the lvg annotator
> (which leads
> >> to a NullPointerException), where it calls lvgCmd.MutateToString(word).
> >>
> >> This apparently works for him when running single threaded, but fails
> when
> >> running multiple threads in parallel.
> >>
> >> When I looked at this, I saw the MutateToString code seems to call 3rd
> party
> >> code from the NIH library.
> >>
> >> Is it possible cTakes or this library doesn't like being called on
> multiple threads?
> >>
> >>
> >> -Marshall
> >>
> >>
> >
>
>
--
with Regards
Shahid Ashraf
Re: insight into this issue involving NullPointerException in cTakes
Posted by Marshall Schor <ms...@schor.com>.
I received a message from someone at cTakes confirming that this is, indeed, a
problem with the 3rd party library being used by cTakes not being thread-safe.
So it is not a UIMA issue.
-Marshall
On 2/12/2017 11:28 AM, Marshall Schor wrote:
> I meant to "cc" this to the uima dev list... it's for the cTakes dev list, of
> course.
>
> -Marshall
>
>
> On 2/12/2017 11:27 AM, Marshall Schor wrote:
>> Hi,
>>
>> We have a thread over on the UIMA dev list, under the subject "CAS Pool", by
>> shahid ashraf.
>>
>> He's getting a "null" returned in cTakes code in the lvg annotator (which leads
>> to a NullPointerException), where it calls lvgCmd.MutateToString(word).
>>
>> This apparently works for him when running single threaded, but fails when
>> running multiple threads in parallel.
>>
>> When I looked at this, I saw the MutateToString code seems to call 3rd party
>> code from the NIH library.
>>
>> Is it possible cTakes or this library doesn't like being called on multiple threads?
>>
>>
>> -Marshall
>>
>>
>
Re: insight into this issue involving NullPointerException in cTakes
Posted by Marshall Schor <ms...@schor.com>.
I meant to "cc" this to the uima dev list... it's for the cTakes dev list, of
course.
-Marshall
On 2/12/2017 11:27 AM, Marshall Schor wrote:
> Hi,
>
> We have a thread over on the UIMA dev list, under the subject "CAS Pool", by
> shahid ashraf.
>
> He's getting a "null" returned in cTakes code in the lvg annotator (which leads
> to a NullPointerException), where it calls lvgCmd.MutateToString(word).
>
> This apparently works for him when running single threaded, but fails when
> running multiple threads in parallel.
>
> When I looked at this, I saw the MutateToString code seems to call 3rd party
> code from the NIH library.
>
> Is it possible cTakes or this library doesn't like being called on multiple threads?
>
>
> -Marshall
>
>