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https://issues.apache.org/jira/browse/BEAM-2953?focusedWorklogId=155678&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-155678
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ASF GitHub Bot logged work on BEAM-2953:
----------------------------------------
Author: ASF GitHub Bot
Created on: 18/Oct/18 02:22
Start Date: 18/Oct/18 02:22
Worklog Time Spent: 10m
Work Description: rezarokni commented on a change in pull request #6540:
[BEAM-2953] Advanced Timeseries examples.
URL: https://github.com/apache/beam/pull/6540#discussion_r226150860
##########
File path:
sdks/java/extensions/timeseries/src/main/java/org/apache/beam/sdk/extensions/timeseries/io/tf/TFExampleToBytes.java
##########
@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.beam.sdk.extensions.timeseries.io.tf;
+
+import org.apache.beam.sdk.annotations.Experimental;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.tensorflow.example.Example;
+
+/** Convert TensorFlow Example object to byte[]. */
+@Experimental
+public class TFExampleToBytes extends DoFn<Example, byte[]> {
Review comment:
This was mainly used for pushing data into TFRecords, however in the last
commit I have modified the code so that rather than use a transform I make use
of a lambda function which calls the getBytes:
https://github.com/rezarokni/beam/blob/timeseries/examples/java/src/main/java/org/apache/beam/examples/timeseries/TimeSeriesExampleToFile.java
https://github.com/rezarokni/beam/blob/timeseries/sdks/java/extensions/timeseries/src/main/java/org/apache/beam/sdk/extensions/timeseries/utils/TSAccumSequences.java#L50
So I think given this refactor I should be able to just delete these ToBytes
transforms...
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Issue Time Tracking
-------------------
Worklog Id: (was: 155678)
Time Spent: 4h 10m (was: 4h)
> Timeseries processing extensions using state API
> ------------------------------------------------
>
> Key: BEAM-2953
> URL: https://issues.apache.org/jira/browse/BEAM-2953
> Project: Beam
> Issue Type: Improvement
> Components: sdk-ideas
> Affects Versions: 2.7.0
> Reporter: Reza ardeshir rokni
> Assignee: Reuven Lax
> Priority: Minor
> Time Spent: 4h 10m
> Remaining Estimate: 0h
>
> A general set of timeseries transforms that abstract the user from the
> process of dealing with some of the common problems when dealing with
> timeseries using BEAM (in stream or batch mode).
> BEAM can be used to build out some very interesting pre-processing stages for
> time series data. Some examples that will be useful:
> - Downsampling time series based on simple MIN, MAX, COUNT, SUM, LAST, FIRST
> - Creating a value for each downsampled window even if no value has been
> emitted for the specific key.
> - Loading the value of a downsample with the previous value (used in FX with
> previous close being brought into current open value)
>
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