The page Hadoop Compatibility in Version 2.0 could not be found.
We have released Hbase 94.1 and Oozie 3.2.0 separately, in the following location: http://package.mapr.com/releases/ecosystem-all
New in This Release
This is a maintenance release with no new features.
The following issues have been resolved in this release.
JobTracker HA detects JT process being terminated and fails over to a standby JT. However if JT process is there, but is not responsive, no failover occurs. With the fix, if JT process is unresponsive for a configurable duration (default 10 min), its jstack is logged and it is restarted automatically.
TaskTracker won't run if node hostname resolves to IP not covered by MAPR_SUBNETS.
Potential deadlock while cleaning up Job Metrics data.
Split calculation does not handle Mapr-FS chunk size 0 and client JVM spins at 100% CPU utilization while submitting Map/Reduce job.
Potential memleak in flushing dirty inodes in file system.
Mirroring no longer causes an assert failure by losing track of the most recent replica of a blank source container.
A lot of containers may get created on a volume when a node goes down.
IOMgr trying to access the cache pages after failing the IO can cause an assert in the filesystem.
Name container for large volume stuck under replicated for 2 days due to message timeout likely because of network issues.
CLDB shows containers has master but containers are stale due to larger than 64K message not being sent.
fsck doesn't work on storage pools > 6TB.
No CLDB master for ~20 minutes after upgrading.
Excessive number of containers in mapred local volume.
The "disk online" operation may crash with EIO error.
The parameter cldb.balancer.disk.threshold.percentage not used.
When the topology of a local volume changes, containers for the local volume are not re-used, resulting in a large number of container creation operations.
Can't set debug logging for maprcli (or any option from command line).
Jobtracker log shows garbage characters in "NetworkTopology: Adding a new node:" entry.
Fileclient should have option to add the IP address of the node to log message along with the container-id.
MCS & CLI
Spurious volume alarms may get raised.
Support for anonymous authentication with SMTP.
Nodes that register early as a CLDB node becomes the master CLDB node sometimes incorrectly appear twice in the balancer classification.
Add start time to maprcli dump rereplicationinfo -json output.
Maintenance mode may not work correctly - node under maintenance is reported with status Critical.
2.0 MCS keeps giving the error "Cannot use both alarmednodes and nfsnodes together" after switch from nfsnodes report to alarmed node report.
Warden and zookeeper fail to start due to requiretty being enabled by default in 1.7.4p5 version of sudo.
When MapR is run as non-root user, stop warden may not stop JT/TT due to incorrect permissions on the pid file.
NFS client hung accessing files with chunksize set to 0.
Buffer overflow when there are more entries to export than 1024 buffer.
mount fails due to mapr user not having root privileges.
When a node's IP number is reassigned to another node, remote procedure calls are misdirected to the wrong node. This can result in widespread errors affecting any system that use the RPC binding layer, including container resync operations that never finish or the creation of several superfluous containers. Restart the cluster to clear this condition.
If you use the latest version of any browser to view the MCS, the CLDB, HBase, JobTracker, and job log pages do not load when you click on the respective links. As a workaround, use the following instructions to disable mixed-content-blocking in your browser:
Scroll to the bottom of the screen, and click Show all content. The page refreshes and displays mixed content.
- At the top of the page, to the left of the address bar, click (the shield icon).
- In the pop-up window that appears, click the down arrow next to "Keep Blocking", and select Disable Protection on This Page. The page refreshes and displays mixed content. The shield icon is replaced with a warning symbol to indicate that the page is displaying both secure and non-secure items.
- Click (the shield icon) on the right side of the address bar.
- In the icon dialog box, click Load anyway. The page refreshes and displays mixed content. The URL in the address bar shows https crossed out to indicate that the page is displaying both secure and non-secure items.