Thread 'IO Worker #0' panicked at 'DB flush failed.: "Error converting string"'

[dannyhellman]

Before filing a new issue, please provide the following information.

I'm running:

• Parity version: 1.8.2-beta
• Operating system: Windows 10 64 bit
• And installed: via installer

I'm running parity server (parity.exe) through the command line. amd after several minutes of syncing, parity crashes and I'm getting the following error:

Start of crash log

stack backtrace:
0: 0x7ff6ed4bae04 - hid_error
1: 0x7ff6ed4bb30b - hid_error
2: 0x7ff6eccdb434 -
3: 0x7ff6ed633d94 - hid_error
4: 0x7ff6ed633c09 - hid_error
5: 0x7ff6ed633ae2 - hid_error
6: 0x7ff6ed633a50 - hid_error
7: 0x7ff6ed63d2cf - hid_error
8: 0x7ff6ec89f5ac -
9: 0x7ff6ecf3f5f2 - hid_error
10: 0x7ff6ece12eeb - hid_error
11: 0x7ff6ece1925a - hid_error
12: 0x7ff6ed635342 - hid_error
13: 0x7ff6ece6c5f6 - hid_error
14: 0x7ff6ed631e8c - hid_error
15: 0x7ff94b5c2774 - BaseThreadInitThunk

Thread 'IO Worker #0' panicked at 'DB flush failed.: "Error converting string"', src\libcore\result.rs:860

End of crash log

After restarting ~10 times and letting the node reach full sync the problem seemed to have stopped.

Here are the logs from the start right until the crash:

C:\Program Files\Parity\Parity>parity
2017-11-01 23:22:42  Starting Parity/v1.8.2-beta-1b6588c-20171025/x86_64-windows-msvc/rustc1.20.0
2017-11-01 23:22:42  Keys path C:\Users\Danny\AppData\Roaming\Parity\Ethereum\keys\Foundation
2017-11-01 23:22:42  DB path C:\Users\Danny\AppData\Local\Parity\Ethereum\chains\ethereum\db\906a34e69aec8c0d
2017-11-01 23:22:42  Path to dapps C:\Users\Danny\AppData\Roaming\Parity\Ethereum\dapps
2017-11-01 23:22:42  State DB configuration: fast
2017-11-01 23:22:42  Operating mode: active
2017-11-01 23:22:42  Configured for Foundation using Ethash engine
2017-11-01 23:22:43  Updated conversion rate to Ξ1 = US$295.54 (402813900 wei/gas)
2017-11-01 23:22:46  Multi-threaded server is not available on Windows. Falling back to single thread.
2017-11-01 23:22:46  Multi-threaded server is not available on Windows. Falling back to single thread.
2017-11-01 23:22:51  Public node URL: enode://b64fc9da02727da1a7c032bcdfbd56e935ea09d33c4a9260633e112317579a78d3207a273a923a625edc24c92ce66bb285b61b903699dc213b9ba8a80ed0718d@127.0.0.1:30303
2017-11-01 23:22:56  Syncing #4470160 c8ec…fbfe     0 blk/s    0 tx/s   0 Mgas/s      0+    0 Qed  #4470160    5/25 peers      2 MiB chain   61 MiB db  0 bytes queue  294 KiB sync  RPC:  1 conn, 15 req/s, 725 µs
2017-11-01 23:23:06  Syncing #4470226 9bae…cf72     6 blk/s  642 tx/s  35 Mgas/s      0+   27 Qed  #4470255    6/25 peers      3 MiB chain   63 MiB db    2 MiB queue    4 MiB sync  RPC:  1 conn, 17 req/s, 172 µs
2017-11-01 23:23:16  Syncing #4470307 e1e0…71c5     8 blk/s  748 tx/s  42 Mgas/s      0+  305 Qed  #4470613    8/25 peers      3 MiB chain   65 MiB db   22 MiB queue    4 MiB sync  RPC:  1 conn, 21 req/s, 111 µs
2017-11-01 23:23:26  Syncing #4470415 bb35…925e    10 blk/s  904 tx/s  54 Mgas/s      0+  633 Qed  #4471049    8/25 peers      5 MiB chain   65 MiB db   51 MiB queue    1 MiB sync  RPC:  1 conn,  4 req/s,  83 µs
2017-11-01 23:23:36  Syncing #4470570 b579…2f4a    15 blk/s 1197 tx/s  67 Mgas/s      0+  477 Qed  #4471049    8/25 peers      4 MiB chain   68 MiB db   39 MiB queue    1 MiB sync  RPC:  1 conn,  6 req/s,  51 µs
2017-11-01 23:23:46  Syncing #4470724 767d…f850    15 blk/s 1234 tx/s  71 Mgas/s      0+  514 Qed  #4471242    8/25 peers      7 MiB chain   69 MiB db   43 MiB queue    1 MiB sync  RPC:  1 conn,  6 req/s,  50 µs
2017-11-01 23:23:56  Syncing #4470836 720c…0686    11 blk/s 1097 tx/s  60 Mgas/s      0+  402 Qed  #4471242    8/25 peers      7 MiB chain   71 MiB db   32 MiB queue    4 MiB sync  RPC:  1 conn,  0 req/s,  41 µs
2017-11-01 23:24:06  Syncing #4470928 024a…3320     9 blk/s  723 tx/s  42 Mgas/s      0+  625 Qed  #4471557   11/25 peers      7 MiB chain   71 MiB db   52 MiB queue    3 MiB sync  RPC:  1 conn,  0 req/s,  41 µs
2017-11-01 23:24:16  Syncing #4470992 84ff…f143     6 blk/s  468 tx/s  27 Mgas/s      0+  561 Qed  #4471557   12/25 peers      5 MiB chain   72 MiB db   47 MiB queue    3 MiB sync  RPC:  1 conn,  0 req/s,  41 µs
2017-11-01 23:24:27  Syncing #4471076 4615…9a17     8 blk/s  782 tx/s  41 Mgas/s      0+  477 Qed  #4471557   10/25 peers      5 MiB chain   73 MiB db   40 MiB queue    3 MiB sync  RPC:  1 conn,  1 req/s,  41 µs
2017-11-01 23:24:36  Syncing #4471171 a2d9…cc76    10 blk/s  762 tx/s  44 Mgas/s      0+  580 Qed  #4471752   13/25 peers      5 MiB chain   74 MiB db   47 MiB queue    4 MiB sync  RPC:  1 conn,  0 req/s,  40 µs
2017-11-01 23:24:46  Syncing #4471247 b804…a728     7 blk/s  739 tx/s  38 Mgas/s      0+  504 Qed  #4471752   13/25 peers      5 MiB chain   75 MiB db   40 MiB queue    4 MiB sync  RPC:  1 conn,  0 req/s,  42 µs
2017-11-01 23:24:56  Syncing #4471305 f128…78d7     5 blk/s  563 tx/s  28 Mgas/s      0+  508 Qed  #4471816   14/25 peers      5 MiB chain   76 MiB db   40 MiB queue    4 MiB sync  RPC:  1 conn,  0 req/s,  43 µs
2017-11-01 23:25:06  Syncing #4471398 579f…1979     9 blk/s  714 tx/s  42 Mgas/s      0+  570 Qed  #4471970   15/25 peers      5 MiB chain   76 MiB db   46 MiB queue    3 MiB sync  RPC:  1 conn,  0 req/s,  42 µs
2017-11-01 23:25:16  Syncing #4471488 c5f2…80d5     9 blk/s  818 tx/s  47 Mgas/s      0+  478 Qed  #4471970   14/25 peers      5 MiB chain   78 MiB db   37 MiB queue    3 MiB sync  RPC:  1 conn,  0 req/s,  42 µs
2017-11-01 23:25:26  Syncing #4471566 73a7…fe27     7 blk/s  675 tx/s  37 Mgas/s      0+  534 Qed  #4472102   16/25 peers      6 MiB chain   78 MiB db   41 MiB queue    3 MiB sync  RPC:  1 conn,  1 req/s,  42 µs
2017-11-01 23:25:36  Syncing #4471664 da5a…51fc     9 blk/s  744 tx/s  45 Mgas/s      0+  434 Qed  #4472102   16/25 peers      6 MiB chain   78 MiB db   33 MiB queue    5 MiB sync  RPC:  1 conn,  1 req/s,  42 µs
2017-11-01 23:25:46  Syncing #4471762 23fc…c27e     9 blk/s  704 tx/s  39 Mgas/s      0+  700 Qed  #4472464   16/25 peers      7 MiB chain   78 MiB db   57 MiB queue  518 KiB sync  RPC:  1 conn,  0 req/s,  43 µs
2017-11-01 23:25:56  Syncing #4471856 e7c8…df64     9 blk/s  774 tx/s  44 Mgas/s      0+  604 Qed  #4472464   17/25 peers      6 MiB chain   78 MiB db   49 MiB queue  518 KiB sync  RPC:  1 conn,  1 req/s,  42 µs

[5chdn]

The log does not indicate any issues, can you provide the full output?

Is this reproducible?

[dannyhellman]

I've reproduced it over several days whenever I have a chunk of unsynced data.
Regarding the logs, this is all I have in the command prompt.
Do you know where I can find more verbose logs?

[andresilva]

I'm not sure RocksDB error messages are working on Windows (https://github.com/paritytech/rust-rocksdb/blob/master/rocksdb-sys/src/ffi.rs#L100) so this could be throwing the same error as #7334.

[andresilva]

I think we should close this after we update our rust-rocksdb dependency. Going forward the actual error message should be displayed on Windows and @dannyhellman can create a new issue with an error message that provides more information if it happens again.