Github user JoshRosen commented on a diff in the pull request: https://github.com/apache/spark/pull/6759#discussion_r32871383 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetTableSupport.scala --- @@ -313,10 +314,16 @@ private[parquet] class RowWriteSupport extends WriteSupport[InternalRow] with Lo writer.addBinary(Binary.fromByteArray(scratchBytes, 0, numBytes)) } + // array used to write Timestamp as Int96 (fixed-length binary) + private val int96buf = new Array[Byte](12) + private[parquet] def writeTimestamp(ts: Long): Unit = { - val binaryNanoTime = CatalystTimestampConverter.convertFromTimestamp( - DateUtils.toJavaTimestamp(ts)) - writer.addBinary(binaryNanoTime) + val (julianDay, timeOfDayNanos) = DateTimeUtils.toJulianDay(ts) + val buf = ByteBuffer.wrap(int96buf) --- End diff -- Actually, do you know if there are any static methods that we could call that would just write put the longs and ints directly into the byte array at given offsets?
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