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corrupted item pointer in streaming based replication

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Hi,

Few days ago we started getting the below message and postgres on our server(streaming replication secondary) would not startup. I am wondering what are our options at this point. Can we do something to fix this?

2013-03-27 11:00:47.281 PDT LOG:  recovery restart point at 161A/17108AA8
2013-03-27 11:00:47.281 PDT DETAIL:  last completed transaction was at log time 2013-03-27 11:00:47.241236-07
2013-03-27 11:00:47.520 PDT LOG:  restartpoint starting: xlog

2013-03-27 11:07:51.348 PDT FATAL:  corrupted item pointer: offset = 0, size = 0
2013-03-27 11:07:51.348 PDT CONTEXT:  xlog redo split_l: rel 1663/16384/115085 left 4256959, right 5861610, next 5044459, level 0, firstright 192
2013-03-27 11:07:51.716 PDT LOG:  startup process (PID 5959) exited with exit code 1
2013-03-27 11:07:51.716 PDT LOG:  terminating any other active server processes

Before the secondaries crashed we also noticed the below error message in postgres logs on the primary few days ago. 

[d: u:postgres p:2498 7] ERROR: could not access status of transaction 837550133 
DETAIL: Could not open file "pg_clog/031E": No such file or directory. [u:postgres p:2498 9]

[d: u:radio p:31917 242] ERROR: could not open file "base/16384/114846.39" (target block 360448000): No such file or directory [d: u:radio p:31917 243]

I'd like to know what can we do to fix this situation. 

Thanks
Jigar


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