sstableexpiredblockers is not working for us

[raphaelsc]

tool is important to verify which sstables are blocking the deletion of an expired sstable, but when running it, it fails as follow:

Exception in thread "main" java.lang.IncompatibleClassChangeError: Found class org.apache.cassandra.cql3.selection.Selectable$Raw, but interface was expected at org.apache.cassandra.cql3.selection.RawSelector$1.apply(RawSelector.java:52) at org.apache.cassandra.cql3.selection.RawSelector$1.apply(RawSelector.java:49) at com.google.common.collect.Lists$TransformingRandomAccessList.get(Lists.java:608) at org.apache.cassandra.cql3.selection.SelectorFactories.(SelectorFactories.java:93) at org.apache.cassandra.cql3.selection.SelectorFactories.createFactoriesAndCollectColumnDefinitions(SelectorFactories.java:79) at org.apache.cassandra.cql3.selection.Selection.fromSelectors(Selection.java:233) at org.apache.cassandra.cql3.statements.SelectStatement$RawStatement.prepareSelection(SelectStatement.java:1021) at org.apache.cassandra.cql3.statements.SelectStatement$RawStatement.prepare(SelectStatement.java:960) at org.apache.cassandra.cql3.statements.SelectStatement$RawStatement.prepare(SelectStatement.java:952) at org.apache.cassandra.cql3.QueryProcessor.getStatement(QueryProcessor.java:564) at org.apache.cassandra.cql3.QueryProcessor.parseStatement(QueryProcessor.java:260) at org.apache.cassandra.cql3.QueryProcessor.executeOnceInternal(QueryProcessor.java:361) at org.apache.cassandra.schema.LegacySchemaMigrator.query(LegacySchemaMigrator.java:1080) at org.apache.cassandra.schema.LegacySchemaMigrator.readSchema(LegacySchemaMigrator.java:198) at org.apache.cassandra.schema.LegacySchemaMigrator.migrate(LegacySchemaMigrator.java:97) at org.apache.cassandra.schema.LegacySchemaMigrator.load(LegacySchemaMigrator.java:88) at org.apache.cassandra.config.Schema.loadFromDiskForTool(Schema.java:100) at org.apache.cassandra.tools.SSTableExpiredBlockers.main(SSTableExpiredBlockers.java:62)