Incremental repairs split the data into repaired and unrepaired SSTables and mark the data state with metadata. Full repairs keeps the data together and uses...
Tag - Cassandra Interview Questions
The value of the repairedAt flag is the timestamp of the last repair.To check the value of the repairedAt flag, use:sstablemetadata example-keyspace-SSTable...
Answer : Three types of read requests that a coordinator node can send to a replica: 1) A direct read request 2) A digest request 3) A background read repair...
A row or cell that reappears in a database table after deletion. This can happen if a node goes down for a long period of time and is then restored without...
DSEÂ supports the following compaction strategies, which you can configure using CQL: LeveledCompactionStrategy (LCS): The leveled compaction strategy creates...
Cassandra client ports: Port number.Description9042Cassandra CQL client port( native clients port ).9160Cassandra client port (Thrift). OpsCenter agents make...
nodetool decommission : Deactivates a node by streaming its data to another node. Causes a live node to decommission itself, streaming its data to the next...
Answer : nodetool rebuild is similar to the bootstrapping process (when you add a new node to the cluster) but for a datacenter. The process here is mainly a...
Secondary indexes filter tables for data stored in non-primary key columns. They are used to query a table using a column that cannot normally be queried...
Answer: In DSE Cassandra, a tombstone is created when data is deleted from a keyspace that has a replication factor (RF) greater than 1 Some operations that...