What happens when the data set exceeds available memory?
Answer / Amit Kumar Diwakar
When the data set exceeds available memory, Impala will spill data to disk if necessary. This can impact performance as reading and writing from disk is slower than in-memory operations.
| Is This Answer Correct ? | 0 Yes | 0 No |
What are impala built-in functions?
Are results returned as they become available, or all at once when a query completes?
Why is space not freed up when I issue drop table?
Describe impala shell (impala-shell command)?
Does impala performance improve as it is deployed to more hosts in a cluster in much the same way that hadoop performance does?
What are the names of daemons in impala?
What is the no. Of threads created by impala?
How are joins performed in impala?
State use cases of impala?
How do I load a big csv file into a partitioned table?
When does impala hold on to or return memory?
What does impala do for fast access?
Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)
Apache Spark (991)
Apache HBase (164)
Apache Flume (95)
Apache Impala (72)
Apache Cassandra (392)
Apache Mahout (35)
Apache Sqoop (82)
Apache ZooKeeper (65)
Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)
Apache Avro (26)
Apache Presto (15)
Apache Tajo (26)
Hadoop General (407)