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POType mismatch Astyanax KeySerializer in Scala
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  1. POType mismatch Astyanax KeySerializer in Scala
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    copied!<p>I am trying to do the following but for some reason my code won't compile due to a type mismatch from the KeySerializer. </p> <pre><code>implicit val keyspace = ConnectionPool.bigdataKeyspace implicit val CF_PAST = ColumnFamily.newColumnFamily(CF, LongSerializer.get, StringSerializer.get) def update(model: M) = { val batch = keyspace.prepareMutationBatch().setConsistencyLevel(ConnectionPool.CL_WRITE) val rk = model.rowkey try { batch.withRow(CF_PAST, rk) .putColumnIfNotNull(model.epoch, model.value, model.ttl) batch.execute Option(model) } catch { case e: Exception =&gt; logger.warn("Unable to insert past model", e) None } } </code></pre> <p>The compile error is as follows"</p> <pre><code>error: type mismatch; found : com.netflix.astyanax.model.ColumnFamily[Long,String] required: com.netflix.astyanax.model.ColumnFamily[Comparable[_ &gt;: String with Long &lt;: Comparable[_ &gt;: String with Long &lt;: Comparable[_ &gt;: String with Long &lt;: java.io.Serializable] with java.io.Serializable] with java.io.Serializable] with java.io.Serializable,String] Note: Long &lt;: Comparable[_ &gt;: String with Long &lt;: Comparable[_ &gt;: String with Long &lt;: Comparable[_ &gt;: String with Long &lt;: java.io.Serializable] with java.io.Serializable] with java.io.Serializable] with java.io.Serializable, but Java-defined class ColumnFamily is invariant in type K. You may wish to investigate a wildcard type such as `_ &lt;: Comparable[_ &gt;: String with Long &lt;: Comparable[_ &gt;: String with Long &lt;: Comparable[_ &gt;: String with Long &lt;: java.io.Serializable] with java.io.Serializable] with java.io.Serializable] with java.io.Serializable`. (SLS 3.2.10) batch.withRow(CF_PAST, rk) </code></pre> <p>This only seems to happen in Scala with KeySerializers that are not a String, ColumnSerializers as other types seem to work fine? Is there a work around for this?</p>
 

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