Fix replication with MEMORY_ONLY_DESER_2
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@ -364,6 +364,12 @@ class BlockManager(val master: BlockManagerMaster, val serializer: Serializer, m
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val startTimeMs = System.currentTimeMillis
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var bytes: ByteBuffer = null
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// If we need to replicate the data, we'll want access to the values, but because our
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// put will read the whole iterator, there will be no values left. For the case where
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// the put serializes data, we'll remember the bytes, above; but for the case where
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// it doesn't, such as MEMORY_ONLY_DESER, let's rely on the put returning an Iterator.
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var valuesAfterPut: Iterator[Any] = null
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locker.getLock(blockId).synchronized {
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logDebug("Put for block " + blockId + " took " + Utils.getUsedTimeMs(startTimeMs)
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@ -391,7 +397,7 @@ class BlockManager(val master: BlockManagerMaster, val serializer: Serializer, m
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// If only save to memory
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memoryStore.putValues(blockId, values, level) match {
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case Right(newBytes) => bytes = newBytes
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case _ =>
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case Left(newIterator) => valuesAfterPut = newIterator
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}
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} else {
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// If only save to disk
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@ -408,8 +414,13 @@ class BlockManager(val master: BlockManagerMaster, val serializer: Serializer, m
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// Replicate block if required
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if (level.replication > 1) {
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// Serialize the block if not already done
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if (bytes == null) {
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bytes = dataSerialize(values) // serialize the block if not already done
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if (valuesAfterPut == null) {
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throw new SparkException(
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"Underlying put returned neither an Iterator nor bytes! This shouldn't happen.")
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}
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bytes = dataSerialize(valuesAfterPut)
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}
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replicate(blockId, bytes, level)
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}
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