Hi, I’m indexing my data to the Elasticsearch using JDBC importer tool. I know that data is not immediately saved on a hard drive but they are stored in a memory buffer and there is possibility data can be lost? How many possibilities exist that data can be lost? How do you know that you lost your data? Is there any way to secure it? How do you supplement it again – night load?
We ca assume that I have 3 nodes with the elasticsearch 5.x