# \#collections

**URL:** https://forum.scylladb.com/tag/collections/9.md

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## [Bad\_alloc when trying to remove a node, large collections, topology changes errors](https://forum.scylladb.com/t/bad-alloc-when-trying-to-remove-a-node-large-collections-topology-changes-errors/4822)

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**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\
**Replies:** 0\
**Last updated:** [May 12, 2025, 3:09am UTC](https://forum.scylladb.com/t/bad-alloc-when-trying-to-remove-a-node-large-collections-topology-changes-errors/4822 "2025-05-12T03:09:35Z")

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## [Bad\_alloc issue, data not accessible with large collections](https://forum.scylladb.com/t/bad-alloc-issue-data-not-accessible-with-large-collections/3133)

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**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\
**Replies:** 0\
**Last updated:** [November 3, 2024, 7:00am UTC](https://forum.scylladb.com/t/bad-alloc-issue-data-not-accessible-with-large-collections/3133 "2024-11-03T07:00:25Z")

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## [Spark Connector, TTL on a per-element basis within the map collection type, which compaction strategy](https://forum.scylladb.com/t/spark-connector-ttl-on-a-per-element-basis-within-the-map-collection-type-which-compaction-strategy/2297)

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**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\
**Replies:** 0\
**Last updated:** [July 14, 2024, 4:56am UTC](https://forum.scylladb.com/t/spark-connector-ttl-on-a-per-element-basis-within-the-map-collection-type-which-compaction-strategy/2297 "2024-07-14T04:56:14Z")

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## [Creating an index on User Defined Types](https://forum.scylladb.com/t/creating-an-index-on-user-defined-types/2178)

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**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\
**Replies:** 0\
**Last updated:** [June 18, 2024, 8:42am UTC](https://forum.scylladb.com/t/creating-an-index-on-user-defined-types/2178 "2024-06-18T08:42:42Z")

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## [Check if an item is inside a list or collection](https://forum.scylladb.com/t/check-if-an-item-is-inside-a-list-or-collection/95)

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**Author:** [@Guy](https://forum.scylladb.com/u/Guy)\
**Replies:** 1\
**Last updated:** [November 20, 2022, 7:50am UTC](https://forum.scylladb.com/t/check-if-an-item-is-inside-a-list-or-collection/95 "2022-11-20T07:50:21Z")

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Question: I’d like to check if an item is inside a list. How can I do that?