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PJ44911: DB2TS - TEXT SEARCH DOES NOT RESPOND AND JAVA PROCESS GRABS HIGHCPU USAGE.

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APAR status

  • Closed as program error.

Error description

  • Content Search Services Text search does not respond and java
    process grabs high cpu usage.
    
    From javacore.20170620.092154.4414.0001.txt.
    
    There are nine "Socket Request Handler Thread_pool-4-thread-xxx"
    threads that appear to be in a lock waiting state with similar
    stack traces:
    
    3XMTHREADINFO      "Socket Request Handler
    Thread_pool-4-thread-39" J9VMThread:0x00000000BCD5A800,
    j9thread_t:0x00007F775ADF5C20,
    java/lang/Thread:0x0000000002238808, state:CW, prio=5
    3XMJAVALTHREAD            (java/lang/Thread getId:0x52,
    isDaemon:false)
    3XMTHREADINFO1            (native thread ID:0x1CE4, native
    priority:0x5, native policy:UNKNOWN)
    3XMTHREADINFO2            (native stack address range
    from:0x00007F770611B000, to:0x00007F770615C000, size:0x41000)
    3XMCPUTIME               CPU usage total: 2104.411438194 secs
    3XMHEAPALLOC             Heap bytes allocated since last GC
    cycle=0 (0x0)
    3XMTHREADINFO3           Java callstack:
    4XESTACKTRACE                at
    java/util/HashMap.getEntry(HashMap.java:480(Compiled Code))
    4XESTACKTRACE                at
    java/util/HashMap.get(HashMap.java:432(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/tokenizer/service/TokenizerRegistry.getConfig(To
    kenizerRegistry.java:97(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/tokenizer/service/DefaultTokenizerPool.aquire(De
    faultTokenizerPool.java:185(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/LinguisticQueryParser.getFieldQuery
    (LinguisticQueryParser.java:724(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.Term(QueryParser
    .java:1820(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.Clause(QueryPars
    er.java:1652(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.ConjQuery(QueryP
    arser.java:1542(Compiled Code))
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.DisjQuery(QueryP
    arser.java:1511)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.Query(QueryParse
    r.java:1470)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.TopLevelQuery(Qu
    eryParser.java:1448)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/parser/QueryParser.parse(QueryParse
    r.java:253)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/LinguisticQueryParser.parse(Linguis
    ticQueryParser.java:2463)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/LinguisticQueryParser.extract(Lingu
    isticQueryParser.java:2617)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/query/LinguisticQueryParser.parseAndExtra
    ct(LinguisticQueryParser.java:2559)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/SearchableImpl.getParsedQuery(SearchableI
    mpl.java:353)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/SearchableImpl.getParsedQuery(SearchableI
    mpl.java:267)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/SearchableImpl.search(SearchableImpl.java
    :201)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/search/SearchBean.search(SearchBean.java:98)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/inyo/search/SelectivityHandler.computeSelectivit
    y(SelectivityHandler.java:219)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/inyo/search/SelectivityHandler.execute(Selectivi
    tyHandler.java:81)
    4XESTACKTRACE                at
    com/ibm/es/nuvo/inyo/common/InyoServer$InyoListener.run(InyoServ
    er.java:430)
    4XESTACKTRACE                at
    java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExec
    utor.java:1156)
    4XESTACKTRACE                at
    java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExe
    cutor.java:626)
    4XESTACKTRACE                at
    java/lang/Thread.run(Thread.java:804)
    3XMTHREADINFO3           Native callstack:
    4XENATIVESTACK               (0x00007F77668A6122
    [libj9prt26.so+0x13122])
    4XENATIVESTACK               (0x00007F77668B379F
    [libj9prt26.so+0x2079f])
    4XENATIVESTACK               (0x00007F77668A5E6B
    [libj9prt26.so+0x12e6b])
    4XENATIVESTACK               (0x00007F77668A5F67
    [libj9prt26.so+0x12f67])
    4XENATIVESTACK               (0x00007F77668B379F
    [libj9prt26.so+0x2079f])
    4XENATIVESTACK               (0x00007F77668A5A8B
    [libj9prt26.so+0x12a8b])
    4XENATIVESTACK               (0x00007F776689F8E2
    [libj9prt26.so+0xc8e2])
    4XENATIVESTACK               (0x00007F77682B3370
    [libpthread.so.0+0xf370])
    4XENATIVESTACK               pthread_cond_wait+0xc3
    (0x00007F77682AF6D3 [libpthread.so.0+0xb6d3])
    4XENATIVESTACK               (0x00007F7766AED46F
    [libj9thr26.so+0x846f])
    4XENATIVESTACK               (0x00007F7766C5CA29
    [libj9vm26.so+0x64a29])
    4XENATIVESTACK               (0x00007F7766C03856
    [libj9vm26.so+0xb856])
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Customers using Content Search Services 5.2.1.7-P8CSS-FP007  *
    * and 5.5.0.0-P8CPE and prior and prior or DB2 Text Search     *
    * v10.5 FP8 and prior and encountering high text search server *
    * CPU utilization during concurrent search operations.         *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * During concurrent search operations, the text search server  *
    * can exhibit high CPU utilization and become unresponsive to  *
    * the calling client application when no available search text *
    * language parser can be acquired from an internal parser pool *
    * due to a potential synchronization issue.                    *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to 5.2.1.7-P8CSS-IF001, 5.5.1.0-P8CSS, DB2 Text      *
    * Search V10.5 FP9 or later.                                   *
    ****************************************************************
    

Problem conclusion

  • Fixed in 5.2.1.7-P8CSS-IF001, and 5.5.1.0-P8CSS, DB2 Text Search
    V10.5 FP9 and later.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PJ44911

  • Reported component name

    CONTENT SEARCH

  • Reported component ID

    5724R8109

  • Reported release

    521

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-07-25

  • Closed date

    2018-03-15

  • Last modified date

    2018-03-15

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    CONTENT SEARCH

  • Fixed component ID

    5724R8109

Applicable component levels



Document information

More support for: FileNet Content Manager
Content Search Services

Software version: 5.2.1

Reference #: PJ44911

Modified date: 15 March 2018


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