Andy Seaborne created JENA-1516:
-----------------------------------
Summary: Concurrency issues with ObjectFileStorage
Key: JENA-1516
URL: https://issues.apache.org/jira/browse/JENA-1516
Project: Apache Jena
Issue Type: Bug
Components: TDB
Affects Versions: Jena 3.6.0, Jena 3.5.0
Reporter: Andy Seaborne
Assignee: Andy Seaborne
Original [user@jena email
report|https://lists.apache.org/thread.html/876e6f69b7953bd0ac91ab85f5687ff6f2d9dfe202d8553602ba7c42@%3Cusers.jena.apache.org%3E].
This is under high load. In the attached test case, at least 50 queries and 50
updates issues by 25 threads are necessary to get any sort of likelihood of a
failure.
Failures of alloc-write are exasperated by the fact flag for checking is not
volatile.
Errors include: some are consequences of earlier errors.
The database is not permanently corrupted, however, updates can be lost.
21:15:56 qtp826865256-16 ERROR BindingTDB :: get1(?s)
java.nio.BufferOverflowException
at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:214)
at sun.nio.ch.IOUtil.read(IOUtil.java:200)
at sun.nio.ch.FileChannelImpl.readInternal(FileChannelImpl.java:741)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:727)
at
org.apache.jena.tdb.base.file.BufferChannelFile.read(BufferChannelFile.java:112)
21:15:56 qtp826865256-13 ERROR BindingTDB :: get1(?p)
java.lang.IllegalArgumentException
at java.nio.Buffer.position(Buffer.java:244)
at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:216)
at sun.nio.ch.IOUtil.read(IOUtil.java:200)
at sun.nio.ch.FileChannelImpl.readInternal(FileChannelImpl.java:741)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:727)
at
org.apache.jena.tdb.base.file.BufferChannelFile.read(BufferChannelFile.java:112)
21:15:56 qtp826865256-16 ERROR BindingTDB :: get1(?s)
org.apache.jena.tdb.base.file.FileException:
ObjectFileStorage.read[nodes](486)[filesize=2280][file.size()=2280]: Failed to
read the length : got 0 bytes
at
org.apache.jena.tdb.base.objectfile.ObjectFileStorage.read(ObjectFileStorage.java:341)
at
org.apache.jena.tdb.base.objectfile.ObjectFileWrapper.read(ObjectFileWrapper.java:57)
at
org.apache.jena.tdb.base.objectfile.ObjectFileWrapper.read(ObjectFileWrapper.java:57)
at org.apache.jena.tdb.lib.NodeLib.fetchDecode(NodeLib.java:78)
21:15:56 qtp826865256-15 ERROR BindingTDB :: get1(?o)
org.apache.jena.tdb.base.file.FileException:
ObjectFileStorage.read[nodes](59)[filesize=2326][file.size()=2326]: Failed to
read the length : got 0 bytes
at
org.apache.jena.tdb.base.objectfile.ObjectFileStorage.read(ObjectFileStorage.java:341)
at
org.apache.jena.tdb.base.objectfile.ObjectFileWrapper.read(ObjectFileWrapper.java:57)
at
org.apache.jena.tdb.base.objectfile.ObjectFileWrapper.read(ObjectFileWrapper.java:57)
at
org.apache.jena.tdb.base.objectfile.ObjectFileWrapper.read(ObjectFileWrapper.java:57)
at
org.apache.jena.tdb.base.objectfile.ObjectFileWrapper.read(ObjectFileWrapper.java:57)
at org.apache.jena.tdb.lib.NodeLib.fetchDecode(NodeLib.java:78)
21:15:56 qtp826865256-13 ERROR BindingTDB :: get1(?s)
java.nio.BufferOverflowException
at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:214)
at sun.nio.ch.IOUtil.read(IOUtil.java:200)
at sun.nio.ch.FileChannelImpl.readInternal(FileChannelImpl.java:741)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:727)
at
org.apache.jena.tdb.base.file.BufferChannelFile.read(BufferChannelFile.java:112)
at org.apache.jena.tdb.lib.NodeLib.fetchDecode(NodeLib.java:78)
21:15:56 qtp826865256-13 ERROR BindingTDB :: get1(?s)
java.lang.IllegalArgumentException
at java.nio.Buffer.position(Buffer.java:244)
at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:216)
at sun.nio.ch.IOUtil.read(IOUtil.java:200)
at sun.nio.ch.FileChannelImpl.readInternal(FileChannelImpl.java:741)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:727)
at
org.apache.jena.tdb.base.file.BufferChannelFile.read(BufferChannelFile.java:112)
{noformat}
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