[ 
https://issues.apache.org/jira/browse/CASSANDRA-2973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13073234#comment-13073234
 ] 

Wojciech Meler commented on CASSANDRA-2973:
-------------------------------------------

BINGO :) I've run scrub in "rolling" way :)
So I've done prescrub snapshots of 4 remaining nodes.
All logs are collected. (Un)fortunately I'm going on vacation so I can give you 
all you need on 15'th October.
Data set is quite big - about 140GB per node, so I'll need some instructions 
what to extract for you.

Snapshot file list from 12th node:
-rw-r--r-- 2 cassandra cassandra 49714745792 Jul 30 02:20 fdb-g-1715-Data.db
-rw-r--r-- 2 cassandra cassandra     4815616 Jul 30 02:20 fdb-g-1715-Filter.db
-rw-r--r-- 2 cassandra cassandra    61556583 Jul 30 02:20 fdb-g-1715-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:20 
fdb-g-1715-Statistics.db
-rw-r--r-- 2 cassandra cassandra  3450580822 Jul 30 02:22 fdb-g-1717-Data.db
-rw-r--r-- 2 cassandra cassandra      904096 Jul 30 02:22 fdb-g-1717-Filter.db
-rw-r--r-- 2 cassandra cassandra    18024560 Jul 30 02:22 fdb-g-1717-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:22 
fdb-g-1717-Statistics.db
-rw-r--r-- 2 cassandra cassandra  3213527243 Jul 30 02:25 fdb-g-1721-Data.db
-rw-r--r-- 2 cassandra cassandra      904336 Jul 30 02:25 fdb-g-1721-Filter.db
-rw-r--r-- 2 cassandra cassandra    18026968 Jul 30 02:25 fdb-g-1721-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:25 
fdb-g-1721-Statistics.db
-rw-r--r-- 2 cassandra cassandra    98385535 Jul 30 03:20 fdb-g-1723-Data.db
-rw-r--r-- 2 cassandra cassandra      247456 Jul 30 03:20 fdb-g-1723-Filter.db
-rw-r--r-- 2 cassandra cassandra     3130599 Jul 30 03:20 fdb-g-1723-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 03:20 
fdb-g-1723-Statistics.db
-rw-r--r-- 2 cassandra cassandra   106856768 Jul 30 09:41 fdb-g-1734-Data.db
-rw-r--r-- 2 cassandra cassandra      195376 Jul 30 09:41 fdb-g-1734-Filter.db
-rw-r--r-- 2 cassandra cassandra     2713645 Jul 30 09:41 fdb-g-1734-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 09:41 
fdb-g-1734-Statistics.db
-rw-r--r-- 2 cassandra cassandra   111863768 Jul 30 17:14 fdb-g-1745-Data.db
-rw-r--r-- 2 cassandra cassandra      194416 Jul 30 17:14 fdb-g-1745-Filter.db
-rw-r--r-- 2 cassandra cassandra     2761017 Jul 30 17:14 fdb-g-1745-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 17:14 
fdb-g-1745-Statistics.db
-rw-r--r-- 2 cassandra cassandra   845886467 Jul 30 20:16 fdb-g-1750-Data.db
-rw-r--r-- 2 cassandra cassandra      902896 Jul 30 20:16 fdb-g-1750-Filter.db
-rw-r--r-- 2 cassandra cassandra    10419730 Jul 30 20:16 fdb-g-1750-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 20:16 
fdb-g-1750-Statistics.db
-rw-r--r-- 2 cassandra cassandra    40226865 Jul 30 21:12 fdb-g-1751-Data.db
-rw-r--r-- 2 cassandra cassandra       66608 Jul 30 21:12 fdb-g-1751-Filter.db
-rw-r--r-- 2 cassandra cassandra     1319135 Jul 30 21:12 fdb-g-1751-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 21:12 
fdb-g-1751-Statistics.db
-rw-r--r-- 2 cassandra cassandra 10904996806 Jul 30 02:41 
mailcache-g-3708-Data.db
-rw-r--r-- 2 cassandra cassandra      254656 Jul 30 02:41 
mailcache-g-3708-Filter.db
-rw-r--r-- 2 cassandra cassandra     5073034 Jul 30 02:41 
mailcache-g-3708-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:41 
mailcache-g-3708-Statistics.db
-rw-r--r-- 2 cassandra cassandra 18281871008 Jul 30 02:55 
mailcache-g-3712-Data.db
-rw-r--r-- 2 cassandra cassandra      968176 Jul 30 02:55 
mailcache-g-3712-Filter.db
-rw-r--r-- 2 cassandra cassandra    11904976 Jul 30 02:55 
mailcache-g-3712-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:55 
mailcache-g-3712-Statistics.db
-rw-r--r-- 2 cassandra cassandra    35390850 Jul 30 04:41 
mailcache-g-3717-Data.db
-rw-r--r-- 2 cassandra cassandra         640 Jul 30 04:41 
mailcache-g-3717-Filter.db
-rw-r--r-- 2 cassandra cassandra       12533 Jul 30 04:41 
mailcache-g-3717-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 04:41 
mailcache-g-3717-Statistics.db
-rw-r--r-- 2 cassandra cassandra  9067927959 Jul 30 11:02 
mailcache-g-3727-Data.db
-rw-r--r-- 2 cassandra cassandra      296416 Jul 30 11:02 
mailcache-g-3727-Filter.db
-rw-r--r-- 2 cassandra cassandra     3578551 Jul 30 11:02 
mailcache-g-3727-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 11:02 
mailcache-g-3727-Statistics.db
-rw-r--r-- 2 cassandra cassandra    67351540 Jul 30 16:08 
mailcache-g-3738-Data.db
-rw-r--r-- 2 cassandra cassandra        1512 Jul 30 16:08 
mailcache-g-3738-Filter.db
-rw-r--r-- 2 cassandra cassandra       29793 Jul 30 16:08 
mailcache-g-3738-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 16:08 
mailcache-g-3738-Statistics.db
-rw-r--r-- 2 cassandra cassandra    57132425 Jul 30 16:14 
mailcache-g-3739-Data.db
-rw-r--r-- 2 cassandra cassandra        1224 Jul 30 16:14 
mailcache-g-3739-Filter.db
-rw-r--r-- 2 cassandra cassandra       23985 Jul 30 16:14 
mailcache-g-3739-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 16:14 
mailcache-g-3739-Statistics.db
-rw-r--r-- 2 cassandra cassandra  3832970739 Jul 30 20:17 
mailcache-g-3748-Data.db
-rw-r--r-- 2 cassandra cassandra      107056 Jul 30 20:17 
mailcache-g-3748-Filter.db
-rw-r--r-- 2 cassandra cassandra     1660163 Jul 30 20:17 
mailcache-g-3748-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 20:17 
mailcache-g-3748-Statistics.db
-rw-r--r-- 2 cassandra cassandra   314153777 Jul 30 20:49 
mailcache-g-3749-Data.db
-rw-r--r-- 2 cassandra cassandra        6808 Jul 30 20:49 
mailcache-g-3749-Filter.db
-rw-r--r-- 2 cassandra cassandra      135155 Jul 30 20:49 
mailcache-g-3749-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 20:49 
mailcache-g-3749-Statistics.db
-rw-r--r-- 2 cassandra cassandra   211709838 Jul 30 21:12 
mailcache-g-3750-Data.db
-rw-r--r-- 2 cassandra cassandra        4664 Jul 30 21:12 
mailcache-g-3750-Filter.db
-rw-r--r-- 2 cassandra cassandra       92163 Jul 30 21:12 
mailcache-g-3750-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 21:12 
mailcache-g-3750-Statistics.db
-rw-r--r-- 2 cassandra cassandra  8404555561 Jul 30 01:34 
mta_logs-g-1485-Data.db
-rw-r--r-- 2 cassandra cassandra     2551456 Jul 30 01:34 
mta_logs-g-1485-Filter.db
-rw-r--r-- 2 cassandra cassandra    50978377 Jul 30 01:34 
mta_logs-g-1485-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 01:34 
mta_logs-g-1485-Statistics.db
-rw-r--r-- 2 cassandra cassandra  3759973372 Jul 30 01:37 
mta_logs-g-1486-Data.db
-rw-r--r-- 2 cassandra cassandra     1611616 Jul 30 01:37 
mta_logs-g-1486-Filter.db
-rw-r--r-- 2 cassandra cassandra    32166666 Jul 30 01:37 
mta_logs-g-1486-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 01:37 
mta_logs-g-1486-Statistics.db
-rw-r--r-- 2 cassandra cassandra  4179780390 Jul 30 01:41 
mta_logs-g-1487-Data.db
-rw-r--r-- 2 cassandra cassandra     1507936 Jul 30 01:41 
mta_logs-g-1487-Filter.db
-rw-r--r-- 2 cassandra cassandra    30052328 Jul 30 01:41 
mta_logs-g-1487-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 01:41 
mta_logs-g-1487-Statistics.db
-rw-r--r-- 2 cassandra cassandra   138623813 Jul 30 15:41 
mta_logs-g-1507-Data.db
-rw-r--r-- 2 cassandra cassandra      429616 Jul 30 15:41 
mta_logs-g-1507-Filter.db
-rw-r--r-- 2 cassandra cassandra     5115547 Jul 30 15:41 
mta_logs-g-1507-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 15:41 
mta_logs-g-1507-Statistics.db
-rw-r--r-- 2 cassandra cassandra   493377854 Jul 30 18:15 
mta_logs-g-1513-Data.db
-rw-r--r-- 2 cassandra cassandra     1190896 Jul 30 18:15 
mta_logs-g-1513-Filter.db
-rw-r--r-- 2 cassandra cassandra    13534807 Jul 30 18:15 
mta_logs-g-1513-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 18:15 
mta_logs-g-1513-Statistics.db
-rw-r--r-- 2 cassandra cassandra    36751337 Jul 30 19:14 
mta_logs-g-1514-Data.db
-rw-r--r-- 2 cassandra cassandra      107152 Jul 30 19:14 
mta_logs-g-1514-Filter.db
-rw-r--r-- 2 cassandra cassandra     2130178 Jul 30 19:14 
mta_logs-g-1514-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 19:14 
mta_logs-g-1514-Statistics.db
-rw-r--r-- 2 cassandra cassandra    32420585 Jul 30 20:14 
mta_logs-g-1515-Data.db
-rw-r--r-- 2 cassandra cassandra       97784 Jul 30 20:14 
mta_logs-g-1515-Filter.db
-rw-r--r-- 2 cassandra cassandra     1943186 Jul 30 20:14 
mta_logs-g-1515-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 20:14 
mta_logs-g-1515-Statistics.db
-rw-r--r-- 2 cassandra cassandra    30340652 Jul 30 21:12 
mta_logs-g-1516-Data.db
-rw-r--r-- 2 cassandra cassandra       90888 Jul 30 21:12 
mta_logs-g-1516-Filter.db
-rw-r--r-- 2 cassandra cassandra     1809686 Jul 30 21:12 
mta_logs-g-1516-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 21:12 
mta_logs-g-1516-Statistics.db
-rw-r--r-- 2 cassandra cassandra   574037723 Jul 30 02:26 
quota_counters-g-476-Data.db
-rw-r--r-- 2 cassandra cassandra     3778336 Jul 30 02:26 
quota_counters-g-476-Filter.db
-rw-r--r-- 2 cassandra cassandra    74766796 Jul 30 02:26 
quota_counters-g-476-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:26 
quota_counters-g-476-Statistics.db
-rw-r--r-- 2 cassandra cassandra    66750073 Jul 30 16:14 
quota_counters-g-500-Data.db
-rw-r--r-- 2 cassandra cassandra      382512 Jul 30 16:14 
quota_counters-g-500-Filter.db
-rw-r--r-- 2 cassandra cassandra     7587562 Jul 30 16:14 
quota_counters-g-500-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 16:14 
quota_counters-g-500-Statistics.db
-rw-r--r-- 2 cassandra cassandra    65704662 Jul 30 16:15 
quota_counters-g-503-Data.db
-rw-r--r-- 2 cassandra cassandra      409456 Jul 30 16:15 
quota_counters-g-503-Filter.db
-rw-r--r-- 2 cassandra cassandra     7134471 Jul 30 16:15 
quota_counters-g-503-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 16:15 
quota_counters-g-503-Statistics.db
-rw-r--r-- 2 cassandra cassandra   496890534 Jul 30 16:20 
quota_counters-g-505-Data.db
-rw-r--r-- 2 cassandra cassandra     7479616 Jul 30 16:20 
quota_counters-g-505-Filter.db
-rw-r--r-- 2 cassandra cassandra    53756417 Jul 30 16:20 
quota_counters-g-505-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 16:20 
quota_counters-g-505-Statistics.db
-rw-r--r-- 2 cassandra cassandra   101189405 Jul 30 19:13 
quota_counters-g-508-Data.db
-rw-r--r-- 2 cassandra cassandra      683296 Jul 30 19:13 
quota_counters-g-508-Filter.db
-rw-r--r-- 2 cassandra cassandra    10281151 Jul 30 19:13 
quota_counters-g-508-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 19:13 
quota_counters-g-508-Statistics.db
-rw-r--r-- 2 cassandra cassandra    36645335 Jul 30 20:49 
quota_counters-g-509-Data.db
-rw-r--r-- 2 cassandra cassandra      182984 Jul 30 20:49 
quota_counters-g-509-Filter.db
-rw-r--r-- 2 cassandra cassandra     3633104 Jul 30 20:49 
quota_counters-g-509-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 20:49 
quota_counters-g-509-Statistics.db
-rw-r--r-- 2 cassandra cassandra    10071816 Jul 30 21:12 
quota_counters-g-510-Data.db
-rw-r--r-- 2 cassandra cassandra       50536 Jul 30 21:12 
quota_counters-g-510-Filter.db
-rw-r--r-- 2 cassandra cassandra     1004098 Jul 30 21:12 
quota_counters-g-510-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 21:12 
quota_counters-g-510-Statistics.db
-rw-r--r-- 2 cassandra cassandra         118 Jul 30 02:25 quota-g-6-Data.db
-rw-r--r-- 2 cassandra cassandra         496 Jul 30 02:25 quota-g-6-Filter.db
-rw-r--r-- 2 cassandra cassandra          33 Jul 30 02:25 quota-g-6-Index.db
-rw-r--r-- 2 cassandra cassandra        4276 Jul 30 02:25 
quota-g-6-Statistics.db


error log sample from that node:
java.io.IOError: java.io.IOException: mmap segment underflow; remaining is 
10648 but 25701 requested
      at 
org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:80)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.createReader(SSTableSliceIterator.java:91)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:67)
      at 
org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:66)
      at 
org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1292)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1189)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1146)
      at org.apache.cassandra.db.Table.getRow(Table.java:385)
      at 
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
      at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
      at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: mmap segment underflow; remaining is 10648 but 
25701 requested
      at 
org.apache.cassandra.io.util.MappedFileDataInput.readBytes(MappedFileDataInput.java:117)
      at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:389)
      at 
org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:368)
      at 
org.apache.cassandra.io.sstable.IndexHelper$IndexInfo.deserialize(IndexHelper.java:194)
      at 
org.apache.cassandra.io.sstable.IndexHelper.deserializeIndex(IndexHelper.java:83)
      at 
org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:73)
      ... 14 more
2011-07-30 21:24:48:340 CEST ERROR 
[ReadStage:1993][org.apache.cassandra.service.AbstractCassandraDaemon] Fatal 
exception in thread Thread[ReadStage:1993,5,main]
java.io.IOError: java.io.IOException: mmap segment underflow; remaining is 
27299 but 28532 requested
      at 
org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:80)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.createReader(SSTableSliceIterator.java:91)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:67)
      at 
org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:66)
      at 
org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1292)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1189)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1146)
      at org.apache.cassandra.db.Table.getRow(Table.java:385)
      at 
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
      at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
      at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: mmap segment underflow; remaining is 27299 but 
28532 requested
      at 
org.apache.cassandra.io.util.MappedFileDataInput.readBytes(MappedFileDataInput.java:117)
      at org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:389)
      at 
org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:368)
      at 
org.apache.cassandra.io.sstable.IndexHelper$IndexInfo.deserialize(IndexHelper.java:194)
      at 
org.apache.cassandra.io.sstable.IndexHelper.deserializeIndex(IndexHelper.java:83)
      at 
org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:73)
      ... 14 more
2011-07-30 21:26:43:823 CEST ERROR 
[ReadStage:1972][org.apache.cassandra.service.AbstractCassandraDaemon] Fatal 
exception in thread Thread[ReadStage:1972,5,main]
java.lang.AssertionError
      at 
org.apache.cassandra.io.util.MappedFileDataInput.skipBytes(MappedFileDataInput.java:145)
      at 
org.apache.cassandra.io.util.FileUtils.skipBytesFully(FileUtils.java:227)
      at 
org.apache.cassandra.io.sstable.IndexHelper.skipBloomFilter(IndexHelper.java:50)
      at 
org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:72)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.createReader(SSTableSliceIterator.java:91)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:67)
      at 
org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:66)
      at 
org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1292)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1189)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1146)
      at org.apache.cassandra.db.Table.getRow(Table.java:385)
      at 
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
      at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
      at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:662)
2011-07-30 21:26:53:869 CEST ERROR 
[ReadStage:1978][org.apache.cassandra.service.AbstractCassandraDaemon] Fatal 
exception in thread Thread[ReadStage:1978,5,main]
java.lang.AssertionError
      at 
org.apache.cassandra.io.util.MappedFileDataInput.skipBytes(MappedFileDataInput.java:145)
      at 
org.apache.cassandra.io.util.FileUtils.skipBytesFully(FileUtils.java:227)
      at 
org.apache.cassandra.io.sstable.IndexHelper.skipBloomFilter(IndexHelper.java:50)
      at 
org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:72)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.createReader(SSTableSliceIterator.java:91)
      at 
org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:67)
      at 
org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:66)
      at 
org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1292)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1189)
      at 
org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1146)
      at org.apache.cassandra.db.Table.getRow(Table.java:385)
      at 
org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
      at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
      at 
org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:662)



> fatal errrors after nodetool cleanup
> ------------------------------------
>
>                 Key: CASSANDRA-2973
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2973
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 0.8.1
>            Reporter: Wojciech Meler
>
> after adding nodes to cluster & running cleanup I get scaring exceptions in 
> log:
> 2011-07-30 00:00:05:506 CEST ERROR 
> [ReadStage:2335][org.apache.cassandra.service.AbstractCassandraDaemon] Fatal 
> exception in thread Thread[ReadStage:2335,5,main]
> java.io.IOError: java.io.IOException: mmap segment underflow; remaining is 
> 4394 but 60165 requested
>         at 
> org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:80)
>         at 
> org.apache.cassandra.db.columniterator.SSTableSliceIterator.createReader(SSTableSliceIterator.java:91)
>         at 
> org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:67)
>         at 
> org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:66)
>         at 
> org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
>         at 
> org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1292)
>         at 
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1189)
>         at 
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1146)
>         at org.apache.cassandra.db.Table.getRow(Table.java:385)
>         at 
> org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:61)
>         at 
> org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
>         at 
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
>  Caused by: java.io.IOException: mmap segment underflow; remaining is 4394 
> but 60165 requested
>         at 
> org.apache.cassandra.io.util.MappedFileDataInput.readBytes(MappedFileDataInput.java:117)
>         at 
> org.apache.cassandra.utils.ByteBufferUtil.read(ByteBufferUtil.java:389)
>         at 
> org.apache.cassandra.utils.ByteBufferUtil.readWithShortLength(ByteBufferUtil.java:368)
>         at 
> org.apache.cassandra.io.sstable.IndexHelper$IndexInfo.deserialize(IndexHelper.java:194)
>         at 
> org.apache.cassandra.io.sstable.IndexHelper.deserializeIndex(IndexHelper.java:83)
>         at 
> org.apache.cassandra.db.columniterator.IndexedSliceReader.<init>(IndexedSliceReader.java:73)
>         ... 14 more
> exceptions disappeared after running scrub

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