Hi Roger, It looks like not all data could fit in memory and pages started to swap into disk. This means that too many pages marked as dirty that causes more often and longer checkpointing, that with WAL writes may significantly slowdown data uploading. Please attach Ignite and GC logs and try to set PersistenceStoreConfiguration.setWalMode() to LOG_ONLY or BACKGROUND (this will reduce disk loading).
Data loss looks strange, is it possible that you have duplicated entry keys? DataStreamer by default does not override existed entries for performance reasons. Thanks! -Dmitry. -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/Strange-problems-with-Ignite-native-Persistence-when-Data-exceeds-Memory-tp16187p16194.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.
