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From "Dipali Sunkersett (JIRA)" <derby-...@db.apache.org>
Subject [jira] Created: (DERBY-1653) Database gets corrupt after throwing NPE while reading Binary Stream data, in chunks
Date Wed, 09 Aug 2006 07:54:13 GMT
Database gets corrupt after throwing NPE while reading Binary Stream data, in chunks
------------------------------------------------------------------------------------

                 Key: DERBY-1653
                 URL: http://issues.apache.org/jira/browse/DERBY-1653
             Project: Derby
          Issue Type: Bug
    Affects Versions: 10.1.3.1
         Environment: Linux (Debian) Kernel 2.6.16
            Reporter: Dipali Sunkersett
            Priority: Critical


One of the component of our project pushes large text (as a binary stream) into Derby DB.
The other component retrieves these texts in chunks and process one text at a time to perform
some manipulation. After fetching and processing roughly 30K texts, we get an NPE and the
whole DB gets corrupt after that. We can not connect to that DB again. We use the "org.apache.derby.jdbc.EmbeddedDriver"
for connecton. The stack trace is as below:

java.lang.NullPointerException

        at org.apache.derby.impl.store.raw.data.BasePage.releaseExclusive(Unknown Source)

        at org.apache.derby.impl.store.raw.data.CachedPage.releaseExclusive(Unknown Source)

        at org.apache.derby.impl.store.raw.data.StoredPage.releaseExclusive(Unknown Source)

        at org.apache.derby.impl.store.raw.data.BasePage.unlatch(Unknown Source)

        at org.apache.derby.impl.store.raw.data.OverflowInputStream.fillByteHolder(Unknown
Source)

        at org.apache.derby.impl.store.raw.data.BufferedByteHolderInputStream.available(Unknown
Source)

        at java.io.FilterInputStream.available(FilterInputStream.java:146)

        at java.io.FilterInputStream.available(FilterInputStream.java:146)

        at sun.nio.cs.StreamDecoder$CharsetSD.inReady(StreamDecoder.java:490)

        at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:451)

        at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:183)

        at java.io.InputStreamReader.read(InputStreamReader.java:167)

        at java.io.BufferedReader.fill(BufferedReader.java:136)

        at java.io.BufferedReader.readLine(BufferedReader.java:299)

        at java.io.BufferedReader.readLine(BufferedReader.java:362)

        at com.irm.dag.occcalc.command.CorpusWordPhraseOccCalc.calculateOccurrences(CorpusWordPhraseOccCalc.java:128)

        at com.irm.dag.occcalc.command.CorpusOccCalc.calculate(CorpusOccCalc.java:44)

        at com.irm.dag.occcalc.test.WrapperForOccurrenceCalculator.main(WrapperForOccurrenceCalculator.java:56)




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