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https://issues.apache.org/jira/browse/CASSANDRA-3001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093988#comment-13093988
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Pavel Yaskevich commented on CASSANDRA-3001:
--------------------------------------------
Applied 0001 and 0003 and used `ant gen-thrift-java && ant avro-generate && ant
clean`.
CompressedRandomAccessReaderTest weren't to compile at first because
Line 108 should be changed to
{noformat}
SequentialWriter writer = new CompressedSequentialWriter(file,
metadata.getPath(), false, new
CompressionParameters(SnappyCompressor.instance));
{noformat}
After that modifications `ant test` succeeded.
Tried to run `ant test-compression` and various tests are failing exception
similar to this:
{noformat}
[junit] Testcase:
testIndexCreate(org.apache.cassandra.db.ColumnFamilyStoreTest): Caused an
ERROR
[junit] error reading 1 of 1
[junit] java.lang.RuntimeException: error reading 1 of 1
[junit] at
org.apache.cassandra.db.columniterator.SimpleSliceReader.computeNext(SimpleSliceReader.java:83)
[junit] at
org.apache.cassandra.db.columniterator.SimpleSliceReader.computeNext(SimpleSliceReader.java:40)
[junit] at
com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
[junit] at
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
[junit] at
org.apache.cassandra.db.columniterator.SSTableSliceIterator.hasNext(SSTableSliceIterator.java:107)
[junit] at
org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:194)
[junit] at
org.apache.cassandra.utils.MergeIterator.<init>(MergeIterator.java:47)
[junit] at
org.apache.cassandra.utils.MergeIterator$ManyToOne.<init>(MergeIterator.java:142)
[junit] at
org.apache.cassandra.utils.MergeIterator.get(MergeIterator.java:66)
[junit] at
org.apache.cassandra.db.filter.QueryFilter.collateColumns(QueryFilter.java:96)
[junit] at
org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:226)
[junit] at
org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:61)
[junit] at
org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1318)
[junit] at
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1171)
[junit] at
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1122)
[junit] at
org.apache.cassandra.db.index.keys.KeysSearcher.search(KeysSearcher.java:203)
[junit] at
org.apache.cassandra.db.index.SecondaryIndexManager.search(SecondaryIndexManager.java:428)
[junit] at
org.apache.cassandra.db.ColumnFamilyStore.search(ColumnFamilyStore.java:1405)
[junit] at
org.apache.cassandra.db.ColumnFamilyStoreTest.queryBirthdate(ColumnFamilyStoreTest.java:485)
[junit] at
org.apache.cassandra.db.ColumnFamilyStoreTest.testIndexCreate(ColumnFamilyStoreTest.java:465)
[junit] Caused by: java.nio.channels.ClosedChannelException
[junit] at
org.apache.cassandra.io.util.RandomAccessReader.read(RandomAccessReader.java:268)
[junit] at java.io.RandomAccessFile.readByte(RandomAccessFile.java:623)
[junit] at
org.apache.cassandra.utils.ByteBufferUtil.readShortLength(ByteBufferUtil.java:356)
[junit] at
org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:367)
[junit] at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:87)
[junit] at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:82)
[junit] at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:72)
[junit] at
org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:36)
[junit] at
org.apache.cassandra.db.columniterator.SimpleSliceReader.computeNext(SimpleSliceReader.java:79)
{noformat}
The same happened when I re-compiled and run `./tools/stress/bin/stress -n
10000 -I SnappyCompressor` and then tried to read the data.
Have you tried to run the tests?
> Make the compression algorithm and chunk length configurable
> ------------------------------------------------------------
>
> Key: CASSANDRA-3001
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3001
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Labels: compression
> Fix For: 1.0
>
> Attachments: 0001-Pluggable-algorithm-and-chunk-length.patch,
> 0002-Thrift-crap.patch, 0003-Add-deflate-compressor.patch
>
>
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