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OPERATIONAL DEFECT DATABASE
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IMPORTANT: The patches provided in the Resolution are recommended to prevent data loss from occurring. HPE recommends performing this upgrade at the customer's earliest possible convenience. Neglecting to perform the recommended action and not performing the recommended resolution could result in the potential for subsequent errors to occur. A software defect was introduced in recent patches for Ezmeral Data Fabric versions v6.1.0 and v6.1.1. The patches that introduced this defect are: mapr-patch-6.1.0.20180926230239.GA-20220606045112.x86_64.rpm mapr-patch-6.1.1.20210324131839.GA.GA-20220614022915.x86_64.rpm The defect causes repetition of a container in "InactiveServers/UnusedServers" status, to get stuck in the "resync"/"become master state". When this occurs, the following will be returned by the dump containerinfo command:
Ezmeral Data Fabric patches where the defect was introduced: mapr-patch-6.1.0.20180926230239.GA-20220606045112.x86_64.rpm. Any mapr-patch for v6.1.0 released on or after June 6, 2022 and prior to August 29, 2022 are susceptible to this defect. mapr-patch-6.1.1.20210324131839.GA.GA-20220614022915.x86_64.rpm. Any mapr-patch for v6.1.1 released on or after June 14, 2022 and prior to September 14, 2022 are susceptible to this defect.
Ezmeral Data Fabric patches where the defect was first resolved: mapr-patch-6.1.0.20180926230239.GA-20220829073611.x86_64. Note : HPE strongly recommends installing v6.1.0 mapr-patch dated August 29, 2022 (mapr-patch-6.1.0.20180926230239.GA-20220829073611.x86_64) or later. All HPE mapr-patch releases are cumulative, so any mapr-patch for v6.1.0 released on or after August 29, 2022 will contain this fix. mapr-patch-6.1.1.20210324131839.GA-20220914002212.x86_64. Note : HPE strongly recommends installing v6.1.1 mapr-patch dated September 14, 2022 (mapr-patch-6.1.1.20210324131839.GA-20220914002212.x86_64) or later. All HPE mapr-patch releases are cumulative, so any mapr-patch for v6.1.1 released on or after September 14, 2022 will contain this fix. Follow the steps below to download either of the patches: Go to https://sftp.mapr.com Login with "maprpatches". No password is needed. Go to the folder named by version or ecosystem as applicable. Download the patch therein (e.g., look inside the DEB or RPM subfolder). Follow the instructions here to apply the patch: Applying a Patch Statutory warning: Patches provided by HPE are intended to be tactical fixes for specific issues that may be critically limiting the quality of your experience and/or results. Given the inherent rigor of validation in regular release builds over patch builds, Support strongly recommends that when possible, you should upgrade your clusters to the latest releases to avoid the occurrence of known-and-fixed issues. Note: Each patch contains the code fixes that were included in the previous patch for that Ezmeral version. Since Ezmeral patches are version-specific and cumulative you can apply the latest patch from http://sftp.mapr.com After applying one of the above patches (or later mapr-patch releases), the container whose Warden was stopped gets only one entry in "InactiveServers" list: IMPORTANT: After applying one of the patches containing the fix for this issue, if any of the below problematic scenarios occurs, contact HPE Support and reference document ID: a00127989en_us. These scenarios must be fixed manually by HPE Support. Copies stuck in Resync. Two copies of a container are in valid state and one in an inactive state. The Container Location Database (CLDB) believes there is a replica of the container on 10.103.76.120; however, there is no such replica. Multiple entries of the same copy in inactive and unused. Copy with BM also has an entry in unused, and CLDB asks the MFS configuration file to delete that copy. Healthy master, resyncing node also listed as inactive, the third inactive server does not have a replica on disk. RECEIVE PROACTIVE UPDATES : Receive support alerts (such as Customer Advisories), as well as updates on drivers, software, firmware, and customer replaceable components, proactively in your e-mail through HPE Support Alerts. Sign up for Support Alerts at the following URL: HPE Email Preference Center. NAVIGATION TIP: For hints on navigating HPE.com to locate the latest drivers, patches and other support software downloads, refer to the Navigation Tips document. SEARCH TIP: For hints on locating similar documents on HPE.com, refer to the Search Tips document.