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Used to connect HBase Hadoop’s Metrics2 framework. HBase Configuration File Descriptions backup-mastersĪ plain-text file which lists hosts on which the Master should start a backup Master process, one host per line.
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The following command starts four additional RegionServers, running on sequential ports starting at 16202/16302 (base ports 16200/16300 plus 2). You can run 99 additional RegionServers that are not a HMaster or backup HMaster, on a server. However, the base ports for additional RegionServers are not the default ports since the default ports are used by the HMaster, which is also a RegionServer since HBase version 1.0.0. It works in a similar way to the local-master-backup.sh command, in that each parameter you provide represents the port offset for an instance.Įach RegionServer requires two ports, and the default ports are 1600. The local-regionservers.sh command allows you to run multiple RegionServers. Running multiple HRegionServers on the same system can be useful for testing in pseudo-distributed mode. Generally, one HRegionServer runs per node in the cluster. The HRegionServer manages the data in its StoreFiles as directed by the HMaster.
#U he hive file couldnt be created software#
Appendix K: HBase and the Apache Software Foundation.Appendix I: Other Information About HBase.Appendix E: Compression and Data Block Encoding In HBase.
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Appendix A: Contributing to Documentation.Integration Testing with a HBase Mini-Cluster Troubleshooting and Debugging Apache HBase.Using SPNEGO for Kerberos authentication with Web UIs Accessing Other HBase Tables in a MapReduce Job
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Writing HFiles Directly During Bulk Import HBase as a MapReduce Job Data Source and Data Sink Operational and Performance Configuration Options Secondary Indexes and Alternate Query Paths Overriding configuration starting the HBase Shell Read HBase Shell Commands from a Command File Running the Shell in Non-Interactive Mode HBase run modes: Standalone and Distributed Cookies can be cleared from a Web browser or expire, but if a valid cookie is obtained by a hacker, it could potentially be used to gain access to a person’s account. based security researcher, Jordan Lee Jones, showed how eBay is vulnerable to a cross-site scripting attack that could potentially be used to hijack user accounts.Ī cookie is a small data file stored in a Web browser that remembers certain data, such as if a person has already logged into the website. The cookie would be emailed to the attacker, Jones said. He said the flaw could be used to grab cookies from logged-in eBay users who visit a page that has been injected with the attack code.
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The second vulnerability Jones found is a cross-site scripting (XSS) flaw, where code from another source is executed within a website. Since it disclosed the breach, eBay has been criticized for not alerting customers more clearly and waiting for days to send a mass email advising customers to change their passwords. They eventually stole customer names, encrypted passwords, email addresses, physical addresses, phone numbers and birth dates. The company said attackers gained log-in credentials for a small number of employees in late February and early March.