Problem Note 57099: WebHDFS REST API does not work correctly on SAS/ACCESS® Interface to Hadoop when high availability is configured in the Hadoop cluster
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Using the WebHDFS RESTFUL application programming interface (API) does not work correctly on Hadoop clusters when high-availability mode is enabled. As a result, you must implement the standard Java configuration steps and the Java Database Connectivity (JDBC) connection must be used. These configuration steps are needed because the issue increases the complexities related to the management of Java JAR files. Otherwise, the steps would not be necessary.
In addition, data integrity issues might occur when you use the WebHDFS RESTFUL API with high-availability mode enabled. When writing data from SAS® to Hadoop in a Kerberos secured environment with high availability enabled, SAS creates the Hadoop Distributed File System (HDFS) file but no data is written. This means that a table is created with zero observations.
To enable the WebHDFS RESTFUL API, set the SAS_HADOOP_RESTFUL environment variable to 1.
Click the Hot Fix tab in this note to access the hot fix for this issue.
Operating System and Release Information
| Product Family | Product | System | SAS Release | |
| Reported | Fixed* | |||
| SAS System | SAS/ACCESS Interface to Hadoop | Windows 7 Home Premium x64 | 9.4 TS1M1 | 9.4 TS1M3 |
| Windows 7 Home Premium 32 bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8.1 Enterprise 32-bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8 Pro x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8 Pro 32-bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8 Enterprise x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8 Enterprise 32-bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Windows 7 Enterprise x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Windows 7 Enterprise 32 bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2012 Std | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2012 R2 Std | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2012 R2 Datacenter | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2012 Datacenter | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2008 for x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2008 R2 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows Server 2008 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8.1 Pro 32-bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8.1 Pro | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft Windows 8.1 Enterprise x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Microsoft® Windows® for x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Windows 7 Professional 32 bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Windows 7 Professional x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Windows 7 Ultimate 32 bit | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Windows 7 Ultimate x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| 64-bit Enabled AIX | 9.4 TS1M1 | 9.4 TS1M3 | ||
| 64-bit Enabled Solaris | 9.4 TS1M1 | 9.4 TS1M3 | ||
| HP-UX IPF | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Linux for x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||
| Solaris for x64 | 9.4 TS1M1 | 9.4 TS1M3 | ||