#MEMZ 3.0 BATCH CODE UPDATE#

Replication streams hard limit (It can be set by using the -streams-hard-limit property. However, if a decommissioning DataNode is already assigned with more than the Usually the NameNode makes a simple copy of the block when re-replicating it during decommissioning. Due to a bug in the data reconstruction logic during decommissioning, some parity blocks may be generated with a content of all The first bug can be hit during DataNode decommissioning. Hadoop .Configuration, you can run java -cp `hadoop classpath`Р”Р„pache Issue: HADOOP-16167 HDFS Possible HDFS Erasure Coded (EC) Data Files Corruption in EC ReconstructionР”В¬loudera has detected two bugs that can cause corruption of HDFS Erasure Coded (EC) files during the data reconstruction process. Workaround: Run the java command directly using hadoop classpath to get the classpath. This issue occurs only in CDH 6.2 clusters running on Ubuntu 18 and the error messages can be safely ignored. opt/cloudera/parcels/CDH-6.2.0-1.cdh6.2.x.p0.914039/bin/./lib/hadoop/libexec//hadoop-functions.sh: line 2426: HADOOP_.CONFIGURATION_OPTS: bad substitution opt/cloudera/parcels/CDH-6.2.0-1.cdh6.2.x.p0.914039/bin/./lib/hadoop/libexec//hadoop-functions.sh: line 2331: HADOOP_.CONFIGURATION_USER: bad substitution opt/cloudera/parcels/CDH-6.2.0-1.cdh6.2.0.p0.914039/bin/./lib/hadoop/libexec//hadoop-functions.sh: line 2366: HADOOP_.CONFIGURATION_USER: bad substitution Using the hadoop command-line interface for executing Java classes that are not in the default package results in error messages similar to the following: The table below summarizes the parameters that can be set for the affected services: In the Impala StateStore Environment Advanced Configuration Snippet (Safety Valve), enter:.Click the Scope filter Impala StateStore and Category filter Advanced.In the Impala Daemon Environment Advanced Configuration Snippet (Safety Valve), enter:.Type impala daemon environment in the search field to find the safety valve entry field.Click the Scope filter Impala Daemon and Category filter Advanced.

Restart the affected roles (or configure the safety valves in next section and restart when finished with all configurations).Р”Р‡or role instances that do not have specific Java configuration options:.

Enter -Xss1280k into the field, adding to any existing properties. The Java Configuration Options for NFS Gateway field displays among the The Java Configuration Options for DataNode field displays among the properties

Navigate to the HDFS service by selecting Clusters > HDFS.

Type -Xss1280k in the entry field, adding to any existing settings. The Java Configuration Options for Catalog

Type java in the search field to display Java related configuration parameters.

Select Clusters > Impala, and then click the Configuration tab.

If you cannot apply the kernel update, you can workaround the issue by increasing the Java thread stack size as detailed in the steps below.

#MEMZ 3.0 BATCH CODE UPDATE#

If you have already applied the patch for your OS according to the advisories for CVE-2017-1000364, apply the kernel update that contains the fix for your operating system (some of whichР”Р„re listed in the table). The Linux kernel security patch for CVE-2017-1000364 applied. However, the issue affects any CDH release that runs on RHEL, CentOS, Oracle Linux, SUSE Linux, or Ubuntu and that has had Important: If you have not upgraded your Linux kernel using the distribution's patch for CVE-2017-1000364, do not apply the patch.Р”В¬ommonly used Linux distributions are shown in the table below.

SIGBUS (0x7) at pc=0x00007fe91ef6cebc, pid=30321, tid=0x00007fe930c67700Р”В¬loudera services for HDFS and Impala cannot start after applying the patch. Services that use the JSVC set of libraries crash with a Java Virtual Machine (JVM) error such as:Р”Р„ fatal error has been detected by the Java Runtime Environment: After applying a recent Linux kernel security patch for CVE-2017-1000364, CDH

Memz 3.0 batch code