[jira] [Created] (CASSANDRA-8619) using CQLSSTableWriter gives ConcurrentModificationException

["Igor Berman (JIRA)" <ji...@apache.org>]

Igor Berman created CASSANDRA-8619:
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             Summary: using CQLSSTableWriter gives ConcurrentModificationException
                 Key: CASSANDRA-8619
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8619
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Igor Berman


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

{noformat}
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 (?,?,?,?)

{noformat}

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);



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