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Jacek Lewandowski commented on CASSANDRA-19166: ----------------------------------------------- 4.1 j8 https://app.circleci.com/pipelines/github/jacek-lewandowski/cassandra/1149/workflows/4de1eef7-1b0a-4975-a205-c6dbb5b8f37b > 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 > Priority: Normal > Fix For: 4.1.x, 5.0-rc > > Time Spent: 50m > Remaining Estimate: 0h > > 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