Alas, runs on production server where I have no access -- just am getting the
logs :(
Thanks,
OC
On 27. 1. 2015, at 22:41, Ramsey Gurley <rgur...@smarthealth.com> wrote:
> If the instance is hung, I’d start with
>
> jstack -F <pid>
>
> That should give a stack trace on whatever deadlocked it.
>
> On Jan 27, 2015, at 2:33 PM, OC <o...@ocs.cz> wrote:
>
>> Hello there,
>>
>> another weird case: this application is run single-instance (but
>> ERXObjectStoreCoordinatorPool.maxCoordinators=3,
>> WOAllowsConcurrentRequestHandling=true).
>>
>> Yesterday after 14:10 users reported “No instance” or “Application not
>> found” WO reports. Now, I log all R/R loops in Application.awake and
>> Application.sleep; indeed at 14:10 a R/R loop did start and never ended,
>> actually, almost nothing happened till the app was restarted by the
>> administrator at 14:20. (I am told JavaMonitor has not been able to stop the
>> instance normally, and it had to be killed/force quit.)
>>
>> The single thing which did happen looks like this in my log:
>>
>> ===
>> //////////////////////////////////////////////////////////////////////////////////////////
>> ////// R/R loop #2218 WorkerThread118 started at 14:10:05 26.1.
>> //////////////////////////////////////////////////////////////////////////////////////////
>> DA: reading CZ banner image for market 1000001...
>> 14:20:39.844 WARN Force Quit received. Exiting now... //log:NSLog
>> [Thread-3]
>> APPLICATION SHUTDOWN SEQUENCE COMPLETE
>> ===
>>
>> The “reading banner“ log comes from a direct action:
>>
>> ===
>> WOActionResults bannerAction {
>> def
>> mpk=request().formValueForKey('mkpk'),lang=request().formValueForKey('lang')
>> println "DA: reading $lang banner image for market $mpk..."
>> if (!mpk || !lang) return null
>> ERXEC ec=ERXEC.newEditingContext()
>> DBMarket
>> market=EOUtilities.objectWithPrimaryKeyValue(ec,'DBMarket',mpk as Integer)
>> println "DA: ... $market" //*
>> if (!market) return null
>> def
>> mime=market."marketBannerMIME$lang",data=market."marketBannerData$lang"
>> println "DA: ... mime '$mime' data $data.length B"
>> WOResponse wor=new WOResponse()
>> wor.setHeader(mime,"content-type")
>> ...
>> wor.setContent(data)
>> wor
>> }
>> ===
>>
>> Note the //* log is not present, which suggests that
>> EOUtilities.objectWithPrimaryKeyValue did lock somehow?!? Neither any other
>> R/R loop starts, which looks like not only WorkerThread118 did block, but
>> that the instance stopped accepting requests at all.
>>
>> The FrontBase log (which I regret to say I do not fully understand, namely,
>> those “--N lines, of which I get just the timestamp”) looks like this:
>>
>> ===
>> ...
>> --6 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.53996 "1 0"
>> --D 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.55851 752 48429
>> SELECT t0."C_AUCTION_AMOUNT_STEP", t0."C_AUCTION_AOFFALL",
>> t0."C_AUCTION_MAX_AMOUNT", t0."C_MAX_LENGHT", t0."C_AUCTION_MIN_AMOUNT",
>> t0."C_AUCTION_CHDELAY", t0."C_MIN_LENGTH", t0."C_AUCTION_MINSTART",
>> t0."C_AUCTION_NEXT_SEQ", t0."C_AUCTION_CONCUR", t0."C_CREATION_DATE",
>> t0."C_CREATOR_ID", t0."C_FIELD_IDENTIFIERS_FOR_EDITOR",
>> t0."C_FIELD_IDENTIFIERS_FOR_FILTER", t0."C_FIELD_IDENTIFIERS_FOR_LIST",
>> t0."C_FIELD_IDENTIFIERS_FOR_OFFER", t0."C_FIELD_IDENTIFIERS_FOR_PUBLIC",
>> t0."C_FORM_TEMPLATE_ID", t0."C_MARKET_BANNER_CZ_DATA",
>> t0."C_MARKET_BANNER_EN_DATA", t0."C_MARKET_BANNER_CZ_MIME",
>> t0."C_MARKET_BANNER_EN_MIME", t0."C_SUPPORTS_OFFERS", t0."C_SHORTCUT",
>> t0."C_TITLE", t0."C_UID", t0."C_WIDTHS_FOR_LIST" FROM "T_MARKET" t0 WHERE
>> t0."C_UID" = 1000001;
>> --6 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.55903 "1 0"
>> --7 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.55905 ""
>> --8 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.55907 "1"
>> --2 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.55976 7 48430
>> commit;
>> --6 0x1039f41d8 0x1039f44b0 2015-01-26 14:10:05.55984 "1 0"
>> --3 0x1040841d8 0x1040844b0 2015-01-26 14:20:40.50016
>> ...
>> ===
>>
>> If anybody can see what on earth might have happened, I'd be grateful for
>> any advice. Myself, I just can see the app locked _somehow_ and stopped
>> working at all, but have no idea why and how to prevent that...
>>
>> Note: the direct action worked flawlessly (and is in the logs) in the same
>> instance each previous R/R loop, more than 2000 times.
>>
>> Thanks,
>> OC
>>
>>
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