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From "Daniel Meyer (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-5965) IndexSummary load fails when empty key exists in summary
Date Wed, 04 Sep 2013 16:42:52 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13756954#comment-13756954
] 

Daniel Meyer edited comment on CASSANDRA-5965 at 9/4/13 4:42 PM:
-----------------------------------------------------------------

Patch is good.  To repro the issue it is important to insert an empty string into an indexed
column.  Leaving it null, will not cause a repro.

To repro:

set index_interval to 1

CREATE TABLE cf (
  name text PRIMARY KEY,
  val1 text,
  val2 text
) 

CREATE INDEX cf_val2_idx ON cf (val2);
INSERT INTO cf (name, val1, val2) VALUES ('dmeyer', 'testval', '');

Then run:
nodetool rebuild index ks cf cf.cf_val2_idx
flush
restart node
Observe the ERROR in system.log
After applying the patch and building and reproducing the above procedure the error did not
occur.
                
      was (Author: dmeyer):
    Patch is good.  To repro the issue it is important to insert an empty string into an indexed
column.  Leaving it null, will not cause a repro.

To repro:

CREATE TABLE cf (
  name text PRIMARY KEY,
  val1 text,
  val2 text
) 

CREATE INDEX cf_val2_idx ON cf (val2);
INSERT INTO cf (name, val1, val2) VALUES ('dmeyer', 'testval', '');

Then run:
nodetool rebuild index ks cf cf.cf_val2_idx
flush
restart node
Observe the ERROR in system.log
After applying the patch and building and reproducing the above procedure the error did not
occur.
                  
> IndexSummary load fails when empty key exists in summary
> --------------------------------------------------------
>
>                 Key: CASSANDRA-5965
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5965
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Yuki Morishita
>            Assignee: Yuki Morishita
>             Fix For: 1.2.10
>
>         Attachments: 0001-Add-IndexSummary-test.patch, 5965-1.2.txt
>
>
> IndexSummary load fails with the following error when empty key is added to summary:
> {code}
> ERROR [SSTableBatchOpen:1] 2013-08-30 20:17:41,210 CassandraDaemon.java (line 192) Exception
in thread Thread[SSTableBatchOpen:1,5,main]
> java.lang.AssertionError
>         at org.apache.cassandra.utils.ByteBufferUtil.readBytes(ByteBufferUtil.java:401)
>         at org.apache.cassandra.io.sstable.IndexSummary$IndexSummarySerializer.deserialize(IndexSummary.java:124)
>         at org.apache.cassandra.io.sstable.SSTableReader.loadSummary(SSTableReader.java:491)
>         at org.apache.cassandra.io.sstable.SSTableReader.load(SSTableReader.java:388)
>         at org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:198)
>         at org.apache.cassandra.io.sstable.SSTableReader.open(SSTableReader.java:157)
>         at org.apache.cassandra.io.sstable.SSTableReader$1.run(SSTableReader.java:262)
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>         at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:166)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>         at java.lang.Thread.run(Thread.java:724)
> {code}
> I think this is typically caused by indexing empty column, and then the key in index
columnfamily is added to its IndexSummary.

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