Behavior Changes
Behavioral changes denote a marked change in behavior from the previously released version to this version of software. In HDP 2.2.9, behavioral changes affect the following Hadoop components.
| Hortonworks Bug ID | Component | Summary | Details |
|---|---|---|---|
| BUG-40345 | Hue | Hue now shows log messages for create and insert statements. | Fixed data fetch mechanism to get logs from HiveServer2. |
| BUG-43069 | Hue | Hue File browser does not respect dfs.umaskmode, fs.permissions.umask-mode when creating files or folders. | Hue File browser previously used umask 022 when creating files and folders. In this release, the octal value of umask in hue.ini specifies the umask value to apply when creating files and folders through the Hue File Browser. |
| BUG-44184 | HDFS | When HDFS metadata is replaced, namenode enters safe mode. |
Scenario: A user loads an old Fsimage and starts Namenode. This Fsimage is missing the latest transactions that recently occurred on the cluster. Previous Behavior: When a user starts the
Namenode with this old image, the Namenode will come out of safemode as long as
the amount of blocks reported reaches the set threshold (0.999 is default for
New Behavior: The new behavior is that when
the Namenode detects such a scenario where there are blocks in the cluster which
are tagged with future generation stamps, the Namenode will remain in the safemode
state to prevent the blocks from being deleted. If the user manually executes
|
| BUG-44387 | YARN | Disable container stats publish to ATS by default | Changed the value of
yarn.timeline-service.generic-application-history.save-non-am-container-meta-info
to false. This config defines if YARN will save container meta-info in the
application history store. |
| BUG-44447 | HDFS | The feature introduces a new setting
hadoop.caller.context.enabled. When set to additional fields are written into
namenode audit log records to help identify the job or query that introduced each
NameNode operation. This feature is enabled by
default starting with this release of HDP. |
This feature brings a new key-value pair at the end of each audit log record.
The newly added key at is There is a chance that the new information in the audit log may break existing scripts/automation that was being used to analyze the audit log. In this case the scripts may need to be fixed. We do not recommend disabling this feature as it can be a useful troubleshooting aid. |
| BUG-44523 | Hue | Hue now displays Hive tables in alphabetical order | In Hue Beeswax/Hive UI tables were previously displayed in chronological order (the order in which tables were added). The change in this release is that tables are sorted by alphabetical order by default. |