无法从源代码构建Cassandra

Question

我使用的是Mac OS X，我的ant，java依赖项满足最低要求。 当我通过构建源代码时

ant build

我收到如下错误：

 [echo] apache-cassandra: /Users/taiyuanz/git/cassandra-trunk/build.xml
[javac] Compiling 890 source files to /Users/taiyuanz/git/cassandra-trunk/build/classes/main
[javac] Note: Processing compiler hints annotations
[javac] warning: Supported source version 'RELEASE_6' from annotation processor 'org.openjdk.jmh.generators.BenchmarkProcessor' less than -source '1.8'
[javac] /Users/taiyuanz/git/cassandra-trunk/src/java/org/apache/cassandra/db/partitions/AbstractBTreePartition.java:33: error: reference to Row is ambiguous
[javac] public abstract class AbstractBTreePartition implements Partition, Iterable<Row>
[javac]                                                                             ^
[javac]   both interface org.apache.cassandra.db.rows.Row in org.apache.cassandra.db.rows and class org.apache.cassandra.db.Row in org.apache.cassandra.db match
[javac] /Users/taiyuanz/git/cassandra-trunk/src/java/org/apache/cassandra/db/partitions/PartitionUpdate.java:72: error: reference to Row is ambiguous
[javac]     private BTree.Builder<Row> rowBuilder;
[javac]                           ^
[javac]   both interface org.apache.cassandra.db.rows.Row in org.apache.cassandra.db.rows and class org.apache.cassandra.db.Row in org.apache.cassandra.db match
[javac] /Users/taiyuanz/git/cassandra-trunk/src/java/org/apache/cassandra/db/partitions/PartitionUpdate.java:164: error: reference to Row is ambiguous
[javac]     public static PartitionUpdate singleRowUpdate(CFMetaData metadata, DecoratedKey key, Row row)
.......

都是由于相同的问题-由于Row类引起的歧义。 一个人怎么解决呢？

Answer 1

看起来您的源代码树中具有3.0之前和3.0之后的Cassandra的源代码。 我会跑：

git clean -xfd

看看是否能解决问题。 否则，请删除存储库，然后从干净的克隆重新开始。