Urgent Help Please: "Resource temporarily unavailable"

[Alex Wang <aw...@crossview.com>]

Hi Everyone,

We have an application built using Lucene 1.9. The app allows incremental updating to the index while other users are searching the same index. Today, some search suddenly returns nothing when we know it should return some hits. This does not happen all the time. Sometimes the search succeeded. When checking the logs, I found the following error during searching:

Parameter[0]: java.io.IOException: Resource temporarily unavailable


When this error occurred, there were 2 other users deleting documents from the same index. The deletions seemed to succeed, but the search failed.

I have no clue what could have caused such error.  Unfortunately there is no further info in the logs. Can someone please shed some light on this? Thanks.


Alex

Re: Urgent Help Please: "Resource temporarily unavailable"

[Grant Ingersoll <gs...@apache.org>]

On Aug 6, 2008, at 3:06 PM, Alex Wang wrote:

> Sorry about the double posting. After sending the first email I got  
> a delivery failure notice from support@magentanews.com. I resent it  
> just to be sure.
>
> Unfornately there is no stack trace in the log. The error object was  
> passed to log4j.error(...), but no stack trace was printed out.
>
> I thought both IndexReader and IndexWriter are thread safe. Beside,  
> I have no explicit multi-threading in our own code.

They are thread-safe.  Not really sure what else to go on.  Sorry.

-Grant

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RE: Urgent Help Please: "Resource temporarily unavailable"

[Alex Wang <aw...@crossview.com>]

Sorry about the double posting. After sending the first email I got a delivery failure notice from support@magentanews.com. I resent it just to be sure.

Unfornately there is no stack trace in the log. The error object was passed to log4j.error(...), but no stack trace was printed out.

I thought both IndexReader and IndexWriter are thread safe. Beside, I have no explicit multi-threading in our own code.

Thanks again!

****************************************************
Alex Wang
CrossView Inc.
Office: 416-281-6888
Email: awang@crossview.com
Web:   http://www.crossview.com
****************************************************


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>-----Original Message-----
>From: Grant Ingersoll [mailto:gsingers@apache.org]
>Sent: Wednesday, August 06, 2008 2:42 PM
>To: java-user@lucene.apache.org
>Subject: Re: Urgent Help Please: "Resource temporarily unavailable"
>
>What's the full exception?  We don't even know that the exception is
>in Lucene from what you've described.  So, w/o more info, it will be
>pretty hard to help, but if I had to guess, it sounds like you've got
>some threading problems, but who knows.
>
>Also, no need to send the exact same email 5 minutes apart.
>
>On Aug 6, 2008, at 2:19 PM, Alex Wang wrote:
>
>>
>> Hi Everyone,
>>
>> We have an application built using Lucene 1.9. The app allows
>> incremental updating to the index while other users are searching
>> the same index. Today, some search suddenly returns nothing when we
>> know it should return some hits. This does not happen all the time.
>> Sometimes the search succeeded. When checking the logs, I found the
>> following error during searching:
>>
>> Parameter[0]: java.io.IOException: Resource temporarily unavailable
>>
>>
>> When this error occurred, there were 2 other users deleting
>> documents from the same index. The deletions seemed to succeed, but
>> the search failed.
>>
>> I have no clue what could have caused such error.  Unfortunately
>> there is no further info in the logs. Can someone please shed some
>> light on this? Thanks.
>>
>>
>> Alex
>>
>>
>
>
>
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Re: Urgent Help Please: "Resource temporarily unavailable"

[Grant Ingersoll <gs...@apache.org>]

What's the full exception?  We don't even know that the exception is  
in Lucene from what you've described.  So, w/o more info, it will be  
pretty hard to help, but if I had to guess, it sounds like you've got  
some threading problems, but who knows.

Also, no need to send the exact same email 5 minutes apart.

On Aug 6, 2008, at 2:19 PM, Alex Wang wrote:

>
> Hi Everyone,
>
> We have an application built using Lucene 1.9. The app allows  
> incremental updating to the index while other users are searching  
> the same index. Today, some search suddenly returns nothing when we  
> know it should return some hits. This does not happen all the time.  
> Sometimes the search succeeded. When checking the logs, I found the  
> following error during searching:
>
> Parameter[0]: java.io.IOException: Resource temporarily unavailable
>
>
> When this error occurred, there were 2 other users deleting  
> documents from the same index. The deletions seemed to succeed, but  
> the search failed.
>
> I have no clue what could have caused such error.  Unfortunately  
> there is no further info in the logs. Can someone please shed some  
> light on this? Thanks.
>
>
> Alex
>
>



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