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CREATE TABLE hobs_ods_staging.cart_details ( businessid text, createdtime timestamp, key text, buid text, opid text, status text, type text, updatedtime timestamp, username text, value blob, valuetype text, PRIMARY KEY (businessid, createdtime, key) ) WITH CLUSTERING ORDER BY (createdtime ASC, key ASC) the below desin schema is my materiliazed view for above table CREATE MATERIALIZED VIEW hobs_ods_staging.hos_cart_details_by_status AS SELECT * FROM hobs_ods_staging.hos_cart_details WHERE status IS NOT NULL AND event_date IS NOT NULL AND username IS NOT NULL AND valuetype IS NOT NULL AND key IS NOT NULL PRIMARY KEY (status, event_date, valuetype, key, username) WITH CLUSTERING ORDER BY (event_date ASC, valuetype ASC, key ASC, username ASC) AND additional_write_policy = '99p' AND bloom_filter_fp_chance = 0.01 AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'} AND cdc = false AND comment = '' AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'} AND compression = {'chunk_length_in_kb': '16', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'} AND memtable = 'default' AND crc_check_chance = 1.0 AND extensions = {} AND gc_grace_seconds = 864000 AND max_index_interval = 2048 AND memtable_flush_period_in_ms = 0 AND min_index_interval = 128 AND read_repair = 'BLOCKING' AND speculative_retry = '99p'; the below table is also same as above one CREATE MATERIALIZED VIEW hobs_ods_staging.hos_cart_details_by_date AS SELECT * FROM hobs_ods_staging.hos_cart_details WHERE event_date IS NOT NULL AND status IS NOT NULL AND username IS NOT NULL AND valuetype IS NOT NULL AND key IS NOT NULL PRIMARY KEY (event_date, status, valuetype, key, username) WITH CLUSTERING ORDER BY (status ASC, valuetype ASC, key ASC, username ASC) AND additional_write_policy = '99p' AND bloom_filter_fp_chance = 0.01 AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'} AND cdc = false AND comment = '' AND compaction = {'class': 'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy', 'max_threshold': '32', 'min_threshold': '4'} AND compression = {'chunk_length_in_kb': '16', 'class': 'org.apache.cassandra.io.compress.LZ4Compressor'} AND memtable = 'default' AND crc_check_chance = 1.0 AND extensions = {} AND gc_grace_seconds = 864000 AND max_index_interval = 2048 AND memtable_flush_period_in_ms = 0 AND min_index_interval = 128 AND read_repair = 'BLOCKING' AND speculative_retry = '99p'; now from above all schemas i have designed i should not get tombstome error while doing oprations because the volume of data is very high close to 1million.do something