Russell Alexander Spitzer created CASSANDRA-9136:
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Summary: Mixed 2.0.14 - 2.1.4 Cluster Read Timeout Errors
Key: CASSANDRA-9136
URL: https://issues.apache.org/jira/browse/CASSANDRA-9136
Project: Cassandra
Issue Type: Bug
Components: Core
Environment: 3 Nodes GCE, N1-Standard-2, Ubuntu 12, 1 Node on 2.1.4, 2
on 2.0.14
Reporter: Russell Alexander Spitzer
This error occurs during a rolling upgrade between 2.0.14 and 2.1.4.
h3. Repo
With all the nodes on 2.0.14 make the following tables
{code}
CREATE KEYSPACE test WITH replication = {
'class': 'SimpleStrategy',
'replication_factor': '2'
};
USE test;
CREATE TABLE compact (
k int,
c int,
d int,
PRIMARY KEY ((k), c)
) WITH COMPACT STORAGE
CREATE TABLE norm (
k int,
c int,
d int,
PRIMARY KEY ((k), c)
)
{code}
Then load some data into these tables. I used the python driver
{code}
from cassandra.cluster import Cluster
s = Cluster().connect()
for x in range (1000):
for y in range (1000):
s.execute_async("INSERT INTO test.compact (k,c,d) VALUES
(%d,%d,%d)"%(x,y,y))
s.execute_async("INSERT INTO test.norm (k,c,d) VALUES
(%d,%d,%d)"%(x,y,y))
{code}
Upgrade one node from 2.0.14 -> 2.1.4
Run cqlsh on the upgraded node and certain queries will fail intermittently,
easiest to repo with CL = ALL
{code}
cqlsh> SELECT count(*) FROM test.norm where k = 22 ;
ReadTimeout: code=1200 [Coordinator node timed out waiting for replica nodes'
responses] message="Operation timed out - received only 1 responses."
info={'received_responses': 1, 'required_responses': 2, 'consistency': 'ALL'}
cqlsh> SELECT count(*) FROM test.norm where k = 21 ;
ReadTimeout: code=1200 [Coordinator node timed out waiting for replica nodes'
responses] message="Operation timed out - received only 1 responses."
info={'received_responses': 1, 'required_responses': 2, 'consistency': 'ALL'}
{code}
h3. Possible related exceptions
On the 2.0.14 nodes we sometimes see these exceptions
{code}
ERROR [Thread-19] 2015-04-08 18:48:45,337 CassandraDaemon.java (line 258)
Exception in thread Thread[Thread-19,5,main]
java.lang.NullPointerException
at
org.apache.cassandra.db.RangeSliceCommandSerializer.deserialize(RangeSliceCommand.java:247)
at
org.apache.cassandra.db.RangeSliceCommandSerializer.deserialize(RangeSliceCommand.java:156)
at org.apache.cassandra.net.MessageIn.read(MessageIn.java:99)
at
org.apache.cassandra.net.IncomingTcpConnection.receiveMessage(IncomingTcpConnection.java:149)
at
org.apache.cassandra.net.IncomingTcpConnection.receiveMessages(IncomingTcpConnection.java:131)
at
org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:74)
{code}
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