Please be aware that the above may cause data loss, and may not be something you want to do on any system. You'll have to look at the rest of the Master log, and potentially a RegionServer log, to understand why the log splitting failed. Turning on DEBUG logging may help shed some more light on the situation, but would likely not be required. It can't be said what went wrong with only the provided information. ... View more

You would have to develop a custom ReplicationEndpoint in which you add this new column on every row being replicated. https://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/replication/ReplicationEndpoint.html ... View more

You do not need to create a new table. You can use the existing table if you alter it to add the new column family. "rewrit[ing] the data" means that you must read all data and write it again using the new column family. Whether you read it from HBase or from its original form is of no consequence. ... View more

No, you cannot "rename" a column family in one atomic operation. To "rename", you must rewrite the data with the new column family. Then, you can simply drop the old column family. ... View more

Please include the version of HDP in every question you ask. ... View more

Please start by ensuring you have the latest Phoenix ODBC driver as available on https://hortonworks.com/downloads/ Without more information from you as to what is happening server-side, I'm not sure how you expect anyone to be able to help you. Turn on logging in the ODBC driver (instructions are in the user guide for the ODBC driver on the downloads page) and look at the logging inside of the Phoenix Query Server. ... View more

First, you should investigate in the log files to understand why this region became stuck in this PENDING_CLOSE state. Then, you can close and reassign this region. HBCK should be able to do this for you, or you can use the HBase shell commands to do it by hand. ... View more

It sounds like you are using the software incorrectly. The expectation is that you run a full backup more than once, not only once. You run full backups so that the number of WALs to be tracked for incremental backups is limited. Run a new full backup every couple of weeks. ... View more

Easy way to parse meta? Probably not :). At least, not "easy" in comparison to what you'd expect from our public API. It's definitely doable, but will require a little digging on your part. Not sure the exact version of HBase you're using. You may have some luck with list_procedures, but hard to say off the cuff. ... View more

Region merging is an asynchronous process in HBase. Your only option is to read and parse the relevant data in hbase:meta, and use this to determine when both daughter Regions that you requested to be merged together are combined into a single parent Region. ... View more