Jian Zhou

## Description update the simple query example with PPMLContext in both python and scala api. add more usage example and dataframe operation example. ### 1. Why the change? the old...

This Exception only happens when DataFrame's record number is less than the partition number. for example, DataFrame `df` only contain 3 Row, when we config --master 'local[n]' or use `df.repartition(n)`...

[ISSUE #713]add logstash-output-rocketmq java plugin

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## What is the purpose of the change add a logstash-output-rocketmq java plugin ## Brief changelog XX ## Verifying this change XXXX Follow this checklist to help us incorporate your...

## Description when call ```python orca_estimator = Estimator.from_torch(model=model_creator, optimizer=optimizer_creator, loss=criterion, metrics=[Accuracy()], model_dir=model_dir', use_tqdm=True, backend=backend) ``` on Databricks cluster, model_dir should be a shared path to save files, which is a...

## Description Update Databricks user guide, before, user need to download and upload packages to get BigDL env ready on Databricks, and config by this way, the ray worker still...

## Description In [Databricks RayDemo](https://www.databricks.com/notebooks/raydemo.html) mentioned: ```python # Ray will crash unless sys.stdout is modified. import sys sys.stdout.fileno = lambda: 0 ``` This is because in Databricks notebook, sys.stdout is...