Abe Ratnofsky created CASSANDRA-19166: -----------------------------------------
Summary: StackOverflowError on ALTER after many previous schema changes Key: CASSANDRA-19166 URL: https://issues.apache.org/jira/browse/CASSANDRA-19166 Project: Cassandra Issue Type: Bug Components: Cluster/Schema Reporter: Abe Ratnofsky Assignee: Abe Ratnofsky Since 4.1, TableMetadataRefCache re-wraps its fields in Collections.unmodifiableMap on every local schema update. This causes TableMetadataRefCache's Map fields to reference chains of nested UnmodifiableMaps. Eventually, this leads to a StackOverflowError on get(), which has to traverse lots of these maps to fetch the actual value. https://github.com/apache/cassandra/blob/4059faf5b948c5a285c25fb0f2e4c4288ee7c305/src/java/org/apache/cassandra/schema/TableMetadataRefCache.java#L53 The issue goes away on restart, since TableMetadataRefCache is reloaded from disk. See CASSANDRA-17044, when TableMetadataRefCache was introduced. This issue was discovered on a real test cluster where schema changes were failing, via a heap dump. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org