[CWB] Failure of offline-freqlists.php

[Hardie, Andrew]

I'm afraid it is next to impossible to diagnose this at a distance. The most likely culprit is the OOM killer, if you're on Linux. There might be something in an error log (or via dmesg?) 

However, there is a decent chance it will just tell you that the system was out of memory. Why this would be, I don't know. Corpus size is not the issue, rather, the number of distinct type tuples is (where a type tuple is every distinct combination of word form plus forms of all the other attributes at any given corpus position....)

best

Andrew.

-----Original Message-----
From: cwb-bounces at sslmit.unibo.it <cwb-bounces at sslmit.unibo.it> On Behalf Of Stefan Fischer
Sent: 28 November 2018 18:17
To: cwb at sslmit.unibo.it
Subject: [CWB] Failure of offline-freqlists.php

Hello everyone,

I would like to import a corpus (300M words) into CQPweb. The corpus is already indexed in CWB and the import into CQPweb worked well. As the corpus is rather large, I ran "php offline-freqlists.php my_corpus" in the terminal. Unfortunately, the script fails after several hours and I get the following error message:

----

cwb-scan-corpus error!
Killed



PHP debugging backtrace
=======================
array(2) {
  [1]=>
  array(4) {
    ["file"]=>
    string(42) "/var/www/html/cqpweb/lib/freqtable.inc.php"
    ["line"]=>
    int(99)
    ["function"]=>
    string(17) "exiterror_general"
    ["args"]=>
    array(1) {
      [0]=>
      &string(29) "cwb-scan-corpus error!
Killed"
    }
  }
  [2]=>
  array(4) {
    ["file"]=>
    string(46) "/var/www/html/cqpweb/bin/offline-freqlists.php"
    ["line"]=>
    int(136)
    ["function"]=>
    string(22) "corpus_make_freqtables"
    ["args"]=>
    array(1) {
      [0]=>
      &string(10) "test_corpus"
    }
  }
}

----

I have already imported corpora larger than this one. So I guess corpus size is not the issue. What else could cause a failure of cwb-scan-corpus?

Best,
Stefan
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