Sergio Rua created CASSANDRA-19661:
--------------------------------------
Summary: Cannot restart Cassandra 5 after creating a vector table
and index
Key: CASSANDRA-19661
URL: https://issues.apache.org/jira/browse/CASSANDRA-19661
Project: Cassandra
Issue Type: Bug
Reporter: Sergio Rua
I'm using llama-index and llama3 to train a model. I'm using a very simple code
that reads some *.txt files from local and uploads them to Cassandra and then
creates the index:
{code:java}
# Create the index from documents
index = VectorStoreIndex.from_documents(
documents,
service_context=vector_store.service_context,
storage_context=storage_context,
show_progress=True,
) {code}
This works well and I'm able to use a Chat app to get responses from the
Cassandra data. however, right after, I cannot restart Cassandra. It'll break
with the following error:
{code:java}
INFO [PerDiskMemtableFlushWriter_0:7] 2024-05-23 08:23:20,102
Flushing.java:179 - Completed flushing
/data/cassandra/data/gpt/docs_20240523-10c8eaa018d811ef8dadf75182f3e2b4/da-6-bti-Data.db
(124.236MiB) for commitlog position CommitLogPosition(segmentId=1716452305636,
position=15336)
[...]
WARN [MemtableFlushWriter:1] 2024-05-23 08:28:29,575
MemtableIndexWriter.java:92 - [gpt.docs.idx_vector_docs] Aborting index
memtable flush for
/data/cassandra/data/gpt/docs-aea77a80184b11ef8dadf75182f3e2b4/da-3-bti...{code}
{code:java}
java.lang.IllegalStateException: null
at
com.google.common.base.Preconditions.checkState(Preconditions.java:496)
at
org.apache.cassandra.index.sai.disk.v1.vector.VectorPostings.computeRowIds(VectorPostings.java:76)
at
org.apache.cassandra.index.sai.disk.v1.vector.OnHeapGraph.writeData(OnHeapGraph.java:313)
at
org.apache.cassandra.index.sai.memory.VectorMemoryIndex.writeDirect(VectorMemoryIndex.java:272)
at
org.apache.cassandra.index.sai.memory.MemtableIndex.writeDirect(MemtableIndex.java:110)
at
org.apache.cassandra.index.sai.disk.v1.MemtableIndexWriter.flushVectorIndex(MemtableIndexWriter.java:192)
at
org.apache.cassandra.index.sai.disk.v1.MemtableIndexWriter.complete(MemtableIndexWriter.java:117)
at
org.apache.cassandra.index.sai.disk.StorageAttachedIndexWriter.complete(StorageAttachedIndexWriter.java:185)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
at
java.base/java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1085)
at
org.apache.cassandra.io.sstable.format.SSTableWriter.commit(SSTableWriter.java:289)
at
org.apache.cassandra.db.compaction.unified.ShardedMultiWriter.commit(ShardedMultiWriter.java:219)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.flushMemtable(ColumnFamilyStore.java:1323)
at
org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1222)
at
org.apache.cassandra.concurrent.ExecutionFailure$1.run(ExecutionFailure.java:133)
at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:829) {code}
The table created by the script is as follows:
{noformat}
CREATE TABLE gpt.docs (
partition_id text,
row_id text,
attributes_blob text,
body_blob text,
vector vector<float, 1024>,
metadata_s map<text, text>,
PRIMARY KEY (partition_id, row_id)
) WITH CLUSTERING ORDER BY (row_id ASC)
AND additional_write_policy = '99p'
AND allow_auto_snapshot = true
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.UnifiedCompactionStrategy',
'scaling_parameters': 'T4', 'target_sstable_size': '1GiB'}
AND compression = {'chunk_length_in_kb': '16', 'class':
'org.apache.cassandra.io.compress.LZ4Compressor'}
AND memtable = 'default'
AND crc_check_chance = 1.0
AND default_time_to_live = 0
AND extensions = {}
AND gc_grace_seconds = 864000
AND incremental_backups = true
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';
CREATE CUSTOM INDEX eidx_metadata_s_docs ON gpt.docs (entries(metadata_s))
USING 'org.apache.cassandra.index.sai.StorageAttachedIndex';
CREATE CUSTOM INDEX idx_vector_docs ON gpt.docs (vector) USING
'org.apache.cassandra.index.sai.StorageAttachedIndex';{noformat}
Thank you
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