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https://issues.apache.org/jira/browse/OPENNLP-1166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16291638#comment-16291638
]
ASF GitHub Bot commented on OPENNLP-1166:
-----------------------------------------
kottmann commented on a change in pull request #294: OPENNLP-1166:
TwoPassDataIndexer fails if features contain \n
URL: https://github.com/apache/opennlp/pull/294#discussion_r157066030
##########
File path:
opennlp-tools/src/main/java/opennlp/tools/ml/model/TwoPassDataIndexer.java
##########
@@ -59,20 +62,28 @@ public void index(ObjectStream<Event> eventStream) throws
IOException {
File tmp = File.createTempFile("events", null);
tmp.deleteOnExit();
int numEvents;
- try (Writer osw = new BufferedWriter(new OutputStreamWriter(new
FileOutputStream(tmp),
- StandardCharsets.UTF_8))) {
- numEvents = computeEventCounts(eventStream, osw, predicateIndex, cutoff);
+ BigInteger writeHash;
+ HashSumEventStream writeEventStream = new HashSumEventStream(eventStream);
// do not close.
+ try (DataOutputStream dos = new DataOutputStream(new
BufferedOutputStream(new FileOutputStream(tmp)))) {
+ numEvents = computeEventCounts(writeEventStream, dos, predicateIndex,
cutoff);
}
+ writeHash = writeEventStream.calculateHashSum();
+
display("done. " + numEvents + " events\n");
display("\tIndexing... ");
List<ComparableEvent> eventsToCompare;
- try (FileEventStream fes = new FileEventStream(tmp)) {
- eventsToCompare = index(fes, predicateIndex);
+ BigInteger readHash = null;
+ try (HashSumEventStream readStream = new HashSumEventStream(new
EventStream(tmp))) {
+ eventsToCompare = index(readStream, predicateIndex);
+ readHash = readStream.calculateHashSum();
}
-
tmp.delete();
+
+ if (readHash.compareTo(writeHash) != 0)
+ throw new RuntimeException("Event hash for writing and reading events
did not match.");
Review comment:
The cause for exception will be problems with writing and reading from disk.
Why is IOException not the right one here?
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> TwoPassDataIndexer fails if features contain \n
> -----------------------------------------------
>
> Key: OPENNLP-1166
> URL: https://issues.apache.org/jira/browse/OPENNLP-1166
> Project: OpenNLP
> Issue Type: Improvement
> Components: Machine Learning
> Affects Versions: 1.8.3
> Reporter: Peter Thygesen
> Assignee: Peter Thygesen
>
> Training a model with Newline tokens causes TwoPassDataIndexer to throw
> exception
> Exception in thread "main" java.util.NoSuchElementException
> at java.util.StringTokenizer.nextToken(StringTokenizer.java:349)
> at opennlp.tools.ml.model.FileEventStream.read(FileEventStream.java:71)
> at opennlp.tools.ml.model.FileEventStream.read(FileEventStream.java:35)
> at
> opennlp.tools.ml.model.AbstractDataIndexer.index(AbstractDataIndexer.java:168)
> at
> opennlp.tools.ml.model.TwoPassDataIndexer.index(TwoPassDataIndexer.java:72)
> at
> opennlp.tools.ml.AbstractEventTrainer.getDataIndexer(AbstractEventTrainer.java:68)
> at
> opennlp.tools.ml.AbstractEventTrainer.train(AbstractEventTrainer.java:90)
> at opennlp.tools.namefind.NameFinderME.train(NameFinderME.java:244)
> at
> opennlp.tools.cmdline.namefind.TokenNameFinderTrainerTool.run(TokenNameFinderTrainerTool.java:169)
> at opennlp.tools.cmdline.CLI.main(CLI.java:256)
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