[jira] [Created] (CASSANDRA-10700) 2.1 sstableloader will fail if there are collections in the schema tables

["Tyler Hobbs (JIRA)" <ji...@apache.org>]

Tyler Hobbs created CASSANDRA-10700:
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             Summary: 2.1 sstableloader will fail if there are collections in the schema tables
                 Key: CASSANDRA-10700
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10700
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Tyler Hobbs
            Priority: Minor
             Fix For: 2.1.x


In {{BulkLoader.ExternalClient}}, we use the Thrift {{execute_cql3_query()}} method to read the system schema tables.  Because it's a Thrift connection, we use the v2 protocol format for serializing data.  However, when we later read the results with {{CFMetadata.fromThriftCqlRow()}}, we use the v3 protocol format to deserialize the results.  If there are any collections in the results, such as entries in {{dropped_columns}}, the following error will occur:

{noformat}
Caused by: java.lang.IllegalArgumentException: null
        at java.nio.Buffer.limit(Buffer.java:275) ~[na:1.8.0_45-internal]
        at org.apache.cassandra.utils.ByteBufferUtil.readBytes(ByteBufferUtil.java:543) ~[cassandra-all-2.1.11.jar:2.1.11]
        at org.apache.cassandra.serializers.CollectionSerializer.readValue(CollectionSerializer.java:124) ~[cassandra-all-2.1.1
1.jar:2.1.11]
        at org.apache.cassandra.serializers.MapSerializer.deserializeForNativeProtocol(MapSerializer.java:101) ~[cassandra-all-
2.1.11.jar:2.1.11]
        at org.apache.cassandra.serializers.MapSerializer.deserializeForNativeProtocol(MapSerializer.java:30) ~[cassandra-all-2
.1.11.jar:2.1.11]
        at org.apache.cassandra.serializers.CollectionSerializer.deserialize(CollectionSerializer.java:50) ~[cassandra-all-2.1.
11.jar:2.1.11]
        at org.apache.cassandra.db.marshal.AbstractType.compose(AbstractType.java:68) ~[cassandra-all-2.1.11.jar:2.1.11]
        at org.apache.cassandra.cql3.UntypedResultSet$Row.getMap(UntypedResultSet.java:287) ~[cassandra-all-2.1.11.jar:2.1.11]
        at org.apache.cassandra.config.CFMetaData.fromSchemaNoTriggers(CFMetaData.java:1833) ~[cassandra-all-2.1.11.jar:2.1.11]
        at org.apache.cassandra.config.CFMetaData.fromThriftCqlRow(CFMetaData.java:1126) ~[cassandra-all-2.1.11.jar:2.1.11]
        at org.apache.cassandra.tools.BulkLoader$ExternalClient.init(BulkLoader.java:330) ~[cassandra-all-2.1.11.jar:na]
        ... 7 common frames omitted
{noformat}

I believe this only affects 2.1 due to the re-working of BulkLoader/sstableloader in 2.2 and 3.0, but I haven't confirmed that.



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