[CASSANDRA-8619] using CQLSSTableWriter gives ConcurrentModificationException

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.0.13, 2.1.3
• Component/s: Legacy/Tools

Environment

sun jdk 7
linux - ubuntu

• Severity: Normal
• Assignee: Benedict Elliott Smith
• Reporter: Igor Berman

Authors

Benedict Elliott Smith

Reviewers

Sylvain Lebresne

• Created: 14/Jan/15 12:46
• Updated: 16/Apr/19 09:31
• Resolved: 28/Jan/15 23:01

Description

Using CQLSSTableWriter gives ConcurrentModificationException
I'm trying to load many timeseries into cassandra 2.0.11-1
using 'org.apache.cassandra:cassandra-all:2.0.11'

java.util.ConcurrentModificationException
	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1115)
	at java.util.TreeMap$ValueIterator.next(TreeMap.java:1160)
	at org.apache.cassandra.db.ColumnIndex$Builder.build(ColumnIndex.java:126)
	at org.apache.cassandra.io.sstable.SSTableWriter.rawAppend(SSTableWriter.java:202)
	at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:187)
	at org.apache.cassandra.io.sstable.SSTableSimpleUnsortedWriter$DiskWriter.run(SSTableSimpleUnsortedWriter.java:215)

schema
CREATE TABLE test.sample (ts_id bigint, yr int, t timestamp, v double, tgs set<varchar>, PRIMARY KEY((ts_id,yr), t)) WITH CLUSTERING ORDER BY (t DESC) AND COMPRESSION = {'sstable_compression': 'LZ4Compressor'};

statement:
INSERT INTO  test.sample(ts_id, yr, t, v) VALUES (?,?,?,?)

with .withBufferSizeInMB(128); it happens more than with
.withBufferSizeInMB(256);

code based on http://planetcassandra.org/blog/using-the-cassandra-bulk-loader-updated/

writer.addRow(tsId, year, new Date(time), value);

Any suggestions will be highly appreciated