[CASSANDRA-14199] exception when dumping sstable with frozen collection of UUID

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Duplicate
• Fix Version/s: 3.0.25
• Component/s: Legacy/Tools
• Severity: Normal
• Assignee: Simon Zhou
• Reporter: Simon Zhou

Authors

Simon Zhou

• Created: 29/Jan/18 23:34
• Updated: 01/Aug/21 11:43
• Resolved: 29/Jun/21 17:32

Description

When dumping (sstabledump) sstable with frozen collection of UUID, there is exception like this:

Exception in thread "main" org.apache.cassandra.serializers.MarshalException: UUID should be 16 or 0 bytes (24)
        at org.apache.cassandra.serializers.UUIDSerializer.validate(UUIDSerializer.java:43)
        at org.apache.cassandra.db.marshal.AbstractType.getString(AbstractType.java:128)
        at org.apache.cassandra.tools.JsonTransformer.serializeCell(JsonTransformer.java:440)
        at org.apache.cassandra.tools.JsonTransformer.serializeColumnData(JsonTransformer.java:374)
        at org.apache.cassandra.tools.JsonTransformer.serializeRow(JsonTransformer.java:278)
        at org.apache.cassandra.tools.JsonTransformer.serializePartition(JsonTransformer.java:213)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
        at java.util.Iterator.forEachRemaining(Iterator.java:116)
        at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
        at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
        at org.apache.cassandra.tools.JsonTransformer.toJson(JsonTransformer.java:102)
        at org.apache.cassandra.tools.SSTableExport.main(SSTableExport.java:242)

 

Steps to reproduce:

cqlsh> create TABLE stresscql.sstabledump_test(userid text PRIMARY KEY, c1 list<uuid>, c2 frozen<list<uuid>>, c3 set<text>, c4 frozen<set<text>>, c5 map<text,text>, c6 frozen<map<text,text>>);
cqlsh> insert INTO stresscql.sstabledump_test (userid, c1, c2, c3, c4, c5, c6) VALUES ( 'id', [6947e8c0-02fa-11e8-87e1-fb0d0e20b5c4], [6947e8c0-02fa-11e8-87e1-fb0d0e20b5c4], {'set', 'user'}, {'view', 'over'}, {'good': 'hello', 'root': 'text'}, {'driver': 'java', 'note': 'new'});

 

Root cause:

Frozen collection is treated as simple column and it's the client's responsibility to parse the data from ByteBuffer. We have this logic in different drivers but sstabledump doesn't have the logic in place. It just treat the whole collection as a single UUID.

Issue Links

• duplicates: CASSANDRA-13573 ColumnMetadata.cellValueType() doesn't return correct type for non-frozen collection